Cuyamaca Water Company Records, 1867 - 1938 (MSS 0503)

Extent: 36 Linear feet (6 archive boxes, 26 oversized folders)

Records of the Cuyamaca Water Company, formerly the San Diego Flume Company, which was owned and operated by Colonel Ed Fletcher and Montana businessman James A. Murray from June 1, 1910, until its sale to the La Mesa, Lemon Grove and Spring Valley Irrigation District on January 4, 1926. The Cuyamaca Water Company Records contain typescripts of reports; water rights contracts transferred from the San Diego Flume Company; technical drawings of flumes, siphons, pumping stations, concrete pipes, and forebays; and maps of flume routes, dam locations, proposed dam locations, subdivisions, and the watershed of the San Diego River. A substantial number of the reports relate to the El Capitan Dam and Reservoir Project and the legal controversy surrounding that project. The strength of this collection, however, lies in the maps and technical drawings series, which cartographically documents the growth of the water company. The subdivision maps evidence the growth of the eastern central portion of San Diego as it developed from an agricultural province to a burgeoning residential area. This collection reflects material that was primarily generated and employed by the managers and engineers in the field, and is complemented by the material in the Fletcher Family Papers (MSS 81), which document the administration of the Cuyamaca Water Company.

On June 1, 1910, Colonel Ed Fletcher and Montana businessman James A. Murray purchased the San Diego Flume Company for $150,000, renaming it the Cuyamaca Water Company. The initial purchase transferred all water rights and properties owned and managed by the San Diego Flume Company to the Cuyamaca Water Company, including the Cuyamaca Reservoir and Dam, the Diverting Dam, Eucalyptus Reservoir, La Mesa Reservoir (later renamed Murray Reservoir), and the thirty-six mile Cuyamaca flume line, which ran parallel just east and south of the San Diego River from the Diverting Dam, located on the San Diego River just below the junction of the Boulder Creek, to the Eucalyptus Reservoir, located near present day La Mesa.

The Cuyamaca Water Company was one of several water companies servicing the greater San Diego area at this time. At the time of purchase from the San Diego Flume Company, the Cuyamaca Water Company was furnishing irrigation water to Ex-Mission Rancho, Rancho El Cajon and domestic water to a portion of the City of San Diego. Fletcher and Murray expanded the areas serviced by the Cuyamaca Water Company to include La Mesa, East San Diego and El Cajon; by 1924 the Cuyamaca Water Company was furnishing between 65,000 and 70,000 people with water, both for irrigation and domestic purposes.

Fletcher and Murray owned and operated the Cuyamaca Water Company for 15 years, making or planning several improvements to the existing system, including the construction of the San Vicente Dam and Reservoir, the El Capitan Dam and Reservoir, the Mission Gorge Dam and Reservoir (which was never realized) and the purchase of the El Monte Pumping Station. The most ambitious and controversial of these projects was the El Capitan Dam and Reservoir, which, from its conception, was met with resistence from the City of San Diego. After the Cuyamaca Water Company secured the land intended for the El Capitan Dam and Reservoir, the City of San Diego filed to condemn the Cuyamaca Water Company in an effort to stifle any further development, usurp its water rights and acquire the company at a nominal price. The City of San Diego appealled to the Rail Road Commission to fix a valuation on the Cuyamaca Water Company, which was determined to be $745,000. The City of San Diego, however, declined to exercise its right to purchase the company and dropped the suit. Despite the efforts of Fletcher and Murray, the El Capitan Dam and Reservoir project was not completed until 1935. Many of the projects initiated by the Cuyamaca Water Company were not completed until after the company was sold.

The initial financial arrangement between Murray and Fletcher saw Murray as the principal financier of the Cuyamaca Water Company, owning 5/6 of the company, and Fletcher owning the remaining 1/6 and managing the company. In 1915 William G. Henshaw, a San Diego businessman instrumental in helping to build the Lake Hodges Dam with Fletcher, purchased one half of Fletcher's 1/6 interest in the Cuyamaca Water Company. The three men attempted to sell the Cuyamaca Water Company to the City of San Diego and the La Mesa, Lemon Grove and Spring Valley Irrigation District on several occassions without success. Eventually, Colonel Ed Fletcher sold the Cuyamaca Water Company to the La Mesa, Lemon Grove and Spring Valley Irrigation District for $1,400,000 on January 4, 1926.

The records of the Cuyamaca Water Company include typescript reports, contracts, water rights documents, technical drawings, and maps used for San Diego land and water development from the late 1800s to the mid-1930s. The Cuyamaca Water Company Records are arranged in three series: 1) REPORTS, STUDIES AND SUMMARIES; 2) WATER RIGHTS AND CONTRACTS and 3) MAPS AND TECHINICAL DRAWINGS.

The strength of this collection is the MAPS AND TECHNICAL DRAWINGS series with over three hundred twenty-five maps and technical drawings documenting the early development of San Diego County water resources. Of particular interest is the material, both maps and typescript reports, related to the condemnation suit brought against the Cuyamaca Water Company by the City of San Diego.

This collection complements the BUSINESS RECORDS series of the FLETCHER FAMILY PAPERS (MSS 81), which contain numerous folders relating to the Cuyamaca Water Company, such as correspondence, reports, studies, and summaries. The inclusive dates of the Cuyamaca Water Company Records are 1867-1938; however, the bulk of the material dates from 1910-1925.


This series contains typescript reports, arranged alphabetically, related to the operation and development of the Cuyamaca Water Company that describe and detail the structures and holdings of the Cuyamaca Water Company and efforts to expand and improve the system. A significant number of reports are related to the City of San Diego's attempt to have the Cuyamaca Water Company condemned, particularly the folders titled: "Act of Congress Granting El Capitan Land to the City of San Diego," "Data on El Capitan" and "El Capitan Dam Sites - Core Drill Records and Profiles," as well as the folders relating to valuation, depreciation, rate hearings, and the Rail Road Commission. Also of interest are the reports entitled "Original Cost of the Cuyamaca Water Company" and both folders titled "Description of the Cuyamaca Water System - Harritt," which relate the chronological history of the water system from 1886 to 1926 and the improvements made to this point as well as expected expansion of the system. The original titles of the reports were preserved whenever possible.


This series documents the extant riparian and water rights purchased by the San Diego Flume Company and later transfered to the Cuyamaca Water Company. The folders titled "Water Rights: Contracts and Deeds Book" document the water rights of the San Diego Flume Company and the Cuyamaca Water Company with their customers. The contracts and deeds are arranged in the original order they were filed with deed numbers often out of numerical order. Also included is an index, arranged alphabetically, that lists the name of the water rights owner and the page number location of the contract.


This series is comprised of seven subseries: A) General Systems; B) Subdivisions; C) Dams and Reservoirs Built; D) Dams and Reservoirs, Not Built; E) Flume Routes, Flumes, Siphons, and Tunnels; F) Technical Drawings; and, G) Pumps and Wells. The MAPS AND TECHNICAL DRAWINGS series is the most extensive series of the collection, and meticulously documents the watershed of the Cuyamaca Water Company and its improvements, whether actualized or anticipated. The maps are arranged in alphabetical order within subseries, and the map numbers, when provided, have been included. The map numbers can be cross referenced with an index located in box numbers 83 and 84 of the Fletcher Family Papers (MSS 81). The maps are generally blueprint, diazo photoprints, ink on paper, or ink on linen.

A) The General Systems subseries contains maps that provide the broadest overview of the Cuyamaca Water Company's watershed, including several maps that reveal the entire watershed of the Cuyamaca Water Company.

B) The Subdivisions subseries contains the greatest number of maps in this series and complements the General Systems maps offering detailed views of new residential development within the watershed of the Cuyamaca Water Company.

C) The Dams and Reservoirs Built subseries contains maps of dams and reservoirs that may or may not have been built during the tenure of the Cuyamaca Water Company, but were developed during this period and eventually completed. Included in this subseries are the following dams and reservoirs: El Capitan, Eucalyptus, Grossmont, La Mesa, Old Mission, and San Vicente. The El Capitan and San Vicente Dams and Reservoirs are the most notable projects that were developed but not completed until the company was sold.

D) The Dams and Reservoirs, Not Built subseries contains maps from projects that were being developed but never actualized. The most notable projects are the Boulder Creek Dam and Conduit and the Mission Gorge Dam and Reservoir.

E) The Flume Routes, Flumes, Siphons, and Tunnels subseries contains maps detailing the development, improvement and operation of the Cuyamaca Flume and its numerous siphons, trestles and tunnels. There are several maps of the El Capitan Dam and Reservoir site relating to the condemnation suit leveled against the Cuyamaca Water Company by the City of San Diego.

F) The Technical Drawings subseries contains drawings of equipment and structures developed and employed by the Cuyamaca Water Company. There are a number of drawings pertaining to flume construction, development and improvement.

D) The Pumps and Wells subseries contains maps relating to the development and construction of a number of pumps and wells within the Cuyamaca Water Company system.

Ed Fletcher Papers. MSS 81. Special Collections & Archives, UC San Diego.

Container List


Box: 1 Folder: 1
About Diesel Engines, 1931 - 1938

Includes catalogs, correspondence, maintenance reports, and photographs.

Box: 1 Folder: 2
Act of Congress Granting El Capitan Land to the City of San Diego, 1919
Box: 1 Folder: 3
Available Water Supply from Cuyamaca System, 1922

Correspondence from T. H. King, Chief Engineer of the Cuyamaca Water Company, to the Honorable, the Board of Water Commissioners.

Box: 1 Folder: 4
Certified Copies of Water Plane Measurements on the San Diego River, 1913
Box: 1 Folder: 5
Computations Showing Duty of Water on Cuyamaca System, 1918
Box: 1 Folder: 6
Cost of Various Structures, 1913 - 1914

Valuations of water systems and plants including cost analysis.

Box: 1 Folder: 7
Cuyamaca Studies - F. M. Faude, 1917 - 1918

Includes charts, correspondence and maps.

Box: 1 Folder: 8
Data on El Capitan and Cuyamaca System - C. Harritt, 1915 - 1923

Includes a report written by John Hatton, Acting District Forester; Charles Couch, Attorney; and, Indian Agent Hoffman.

Box: 1 Folder: 9
Depreciation Reports, 1899 - 1915

"Reasons for Using the Straightline Method in Arriving at the Depreciation of a Structure," "Depreciation and Rate Control," "Mulholland Report on Depreciation," and "Data on Depreciation."

Box: 1 Folder: 10
Description of the Cuyamaca System - C. Harritt, 1914 - 1924

Includes the following reports: "Elevation of Various Reservoir Sites along the Flume," "Area of Water Bearing Gravels," "Area and Capacity of: Murray Res., Cuyamaca Res., Mt. Helix Res., Fletcher Res., Bancroft Res., and Alvarado Res.," "List of Private Pumping Plants on the San Diego River," "La Mesa Ditch; map of Miles Res.," "System map showing drainage areas," "Boulder Creek Power Plant," and "Quantities of Concrete and Excavation in Grossmont Res."

Box: 1 Folder: 11
Description of the Cuyamaca Water System - C. Harritt, 1924 - 1930

Includes the following reports: "Brief Description of the Cuyamaca System" and "Description of the District System."

Box: 1 Folder: 12
Diversion Dam Lake - Descriptions

Parcel coordinates and descriptions for the diversion dam lake.

Box: 1 Folder: 13
Dye Canyon Reservoir

Estimates of materials, capacity calculation and map.

Box: 1 Folder: 14
El Capitan Dam Sites - Core drill records and profiles, 1915 - 1924

Includes charts, graphs and photographs, as well as two years of ten day progress reports detailing the City of San Diego's investigation of the El Capitan dam site.

Box: 2 Folder: 1
Engineer's Report on the Condition of the Cuyamaca Flume, 1925 - 1931

Includes an analysis of costs, expenses and income under terms of proposed agreement, as well as several newpaper clippings from the FREEMAN REPORT.

Box: 2 Folder: 2
Flume Reports, 1914 - 1916

Includes the following reports: "Classification of Main Flume," "Flume Line," "Service Conditions," "Flume Measurements," and "Flume Leakage."

Box: 2 Folder: 3
Hydrographic Study of San Vicente Creek, 1923

As reported by Fred Green to Colonel Ed Fletcher.

Box: 2 Folder: 4
Mission Gorge Project - Mass Curve of Reservoir Operation, 1921

As reported by T. H. King.

Box: 2 Folder: 5
Net Safe Yield - Sweetwater Water Company

Extract from a report.

Box: 2 Folder: 6
Net Yield of San Diego River Reservoirs, 1923 - 1930
Box: 2 Folder: 7
Original Cost of the San Diego Flume Company Water System, 1912

As reported by C. S. Alverson.

Box: 2 Folder: 8
Rail Road Commissioner's Audit of Account of Cuyamaca Water Company, 1921 - 1924
Box: 2 Folder: 9
Rainfall Records, 1887 - 1932

The following locales are included in the report: Cuyamaca Dam, Diverting Dam, Chocolate Sect. House, Los Coches, El Cajon (Sweetwater Pass), Eucalyptus Reservoir (Grossmont), Boulder Creek, East Cuyamaca, and Schilling Ranch.

Box: 2 Folder: 10
Rate Hearing of Cuyamaca Water Company before the Rail Road Commission, 1920
Box: 2 Folder: 11
Recommendations of the Board of Water Commissioners of the City of San Diego, 1922
Box: 2 Folder: 12-13
Report on the Net Safe Yield of Mission Gorge Reservoir, 1887 - 1921

As reported by T. H. King.

Box: 2 Folder: 14
Report on the Safe Yield of Fletcher Lake and South Fork Reservoir, 1922
Box: 2 Folder: 15
Report on the Preliminary Inventory and Estimate of the Value of the Cuyamaca Water Company's Property, 1923

As reported by C. Harritt to John Freeman. Also includes report data for John Freeman regarding the yield of the El Monte gravels.

Box: 3 Folder: 1
Report on the Underground Waters of the San Diego River, 1912

As reported by C. S. Alverson.

Box: 3 Folder: 2
Report on the Water Pumped at El Monte Pumping Plant, 1921 - 1925

As reported by C. Harritt to Colonel Ed Fletcher.

Box: 3 Folder: 3
Report on the Water Situation to the Mayor and Common Council of the City of San Diego, 1924

As reported by the City Manager Rhodes.

Box: 3 Folder: 4
Report on the Water Supply Studies, San Diego River, 1920

As reported by the U. S. Reclamation Service, includes maps, charts and graphs.

Box: 3 Folder: 5
Report on the Watershed of the San Diego River, 1921

Reported by M. M. O' Shaughnessey, San Francisco City Engineer, to John D. Spreckels and Colonel Ed Fletcher.

Box: 3 Folder: 6
Report on the Water Tower for the La Mesa Reservoir, 1901

As reported by Edwin Capps.

Box: 3 Folder: 7
Report Outlining Logical Development of the Waters of the San Diego River and the Upper Santa Ysabel Creek, 1923

As reported by T. H. King.

Box: 3 Folder: 8
Report Regarding a Water Rate Increase for the Sweetwater Water Company, 1923

As reported by City Manager Rhodes.

Box: 3 Folder: 9
Safe Yield of City of San Diego, 1915

As reported by Charles H. Lee and presented at the Rail Road Commission Hearing in 1915.

Box: 3 Folder: 10
Small Tract Plats, 1915 - 1916

Includes an index of small tracts and subdivisions.

Box: 3 Folder: 11
Tabulated Water Data, 1886 - 1925

Includes the following reports: "Paramount Rights Suit," "Cuyamaca Water Gage Heights - Cuyamaca Lake, 1899 -1912, and Cuyamaca Flood Waste Calculations, 1916," "1916 Flood Reports: La Mesa Reservoir," and numerous untitled reports.

Box: 3 Folder: 12
Total Diversions of Cuyamaca Water Company, 1889 - 1921
Box: 3 Folder: 13
Valuation of Water Rights of Spring Valley Water Company, 1916
Valuations - Cuyamaca Water Company
Box: 3 Folder: 14
Application No. 118 before the Rail Road Commission of California. Estimate of reproduction cost, present value and annual charges, 1912 - 1915
Box: 3 Folder: 15
Fulton Lane - Construction costs, 1912 - 1914
Box: 3 Folder: 16-17
Water Rates of Agencies from California, 1916 - 1923


Box: 4 Folder: 1
Riparian Owners on San Diego River, 1887 - 1918

Agreement with Murray, Henshaw and Fletcher.

Box: 4 Folder: 2
Riparian Rights and Agreements on San Diego River, 1886 - 1935

Notice of appropriation, grant of rights on El Capitan Reservation and correspondence.

Box: 4 Folder: 3
Riparian Rights and Rights of Way, 1886 - 1928
Box: 4 Folder: 4
Water Appropriations and Notices of Water Appropriations on the San Diego River, 1867 - 1916
Box: 4 Folder: 5
Water Rights of Cuyamaca Water Company, 1914
Water Rights: Contracts and Deeds Books
Box: 4 Folder: 6
Numbers 1 - 7, 1886 - 1887
Box: 4 Folder: 7
Numbers 7 - 8 and 10 - 17, 1887 - 1888
Box: 4 Folder: 8
Numbers 18 - 21, 1887 - 1889
Box: 4 Folder: 9
Numbers 22 - 35, 1887 - 1890

Includes contract number 50; contract number 33 is missing.

Box: 4 Folder: 10
Numbers 35 - 38 and 41, 1890
Box: 4 Folder: 11
Numbers 39 - 41 and 44, 1890 - 1892
Box: 4 Folder: 12
Numbers 42 - 43 and 45 - 46, 1890
Box: 4 Folder: 13
Numbers 46, 52, 33, and 54, 1890 - 1891
Box: 4 Folder: 14
Numbers 51, 56, 33, 55, and 57 - 58, 1891 - 1894
Box: 4 Folder: 15
Numbers 58 and 61 - 63, 1891
Box: 4 Folder: 16
Numbers 63 - 66, 69, and 70, 1891
Box: 4 Folder: 17
Numbers 71, 67, and 72 - 83, 1891
Box: 4 Folder: 18
Numbers 83 - 84, 68, and 85 - 88, 1891 - 1892
Box: 4 Folder: 19
Numbers 88, 90 - 94, 131, and 133 - 134, 1892
Box: 4 Folder: 20
Numbers 137 - 140, 142 - 144, 149 - 151, 154 - 158, 160, and 162, 1892 - 1893
Box: 4 Folder: 21
Numbers 159, 167, 172 - 175, 166, 176 - 177, 180, and 182 - 187, 1893
Box: 4 Folder: 22
Numbers 190, 189, 188, 191 - 194, 196 - 197, 195, and 198, 1893
Box: 5 Folder: 1
Numbers 198, 200 - 204, 206, and 205, 1893
Box: 5 Folder: 2
Numbers 207, 126, 208, 211, 213 - 219, 212, and 222, 1893 - 1894
Box: 5 Folder: 3
Numbers 224 - 231, 249, 233 - 239, and 232, 1893 - 1895
Box: 5 Folder: 4
Numbers 240 -243, 247, 244, 246, 245, 248, and 250 - 253, 1894 - 1895
Box: 5 Folder: 5
Numbers 254 - 258, 260 - 263, 159, and 266, 1895 - 1896
Box: 5 Folder: 6
Numbers 267 - 279, 265, and 281 - 283, 1895 - 1896
Box: 5 Folder: 7
Numbers 285 - 296, 1896 - 1897
Box: 5 Folder: 8
Numbers 297, 299a - 302, 298, 280, 299, 300, 301a, 264, 302a, and 299, 1897 - 1898
Box: 5 Folder: 9
Numbers 306 - 308, 303, and 309 - 313, 1898 - 1902
Box: 5 Folder: 10
Numbers 314 - 330, 1902 - 1903
Box: 5 Folder: 11
Numbers 331 - 339, 1904 - 1906
Box: 5 Folder: 12
Numbers 340 - 366, 1906 - 1909

Includes an alphabetical index of names and assigned contract numbers.

Box: 5 Folder: 13
La Mesa Colony Contract, 1887
Box: 5 Folder: 14
Blank contract
Box: 5 Folder: 15
Contract with Soutler and Crosby, 1890
Box: 5 Folder: 16
Numbers 367 - 383, 1909 - 1910
Box: 5 Folder: 17
Numbers 384 - 392, 1910
Box: 5 Folder: 18
Alphabetical index, indexed to page number


General Systems

Oversize: MC-999-01
Cuyamaca Official System. Map number 2354
Oversize: MC-999-02
Cuyamaca Reservoir - Rainfall and Drainage Area. Map number 2454
Cuyamaca Water Company
Oversize: MC-146-01
Map number 2446, 1914
Oversize: MC-999-03
Map showing actual area under irrigation below El Monte Pump Station and irrigation service area. Map number 2449, 1915
Oversize: MC-999-04
Distribution system. Map number 2709
Oversize: MC-146-02
Index map - Index sheet number 5. Map number 2709
Oversize: MC-999-05
Index map of distribution system plats. Map number 2709, 1913
Oversize: MC-146-03
Pumping plants, drainage areas and stream gaging. Exhibit "H." Map number 2498, 1915
San Diego County, California
Oversize: MC-999-06
Map number 2355. Formerly number 2449B, 1915
Oversize: MC-999-07
Exhibit "A" and "B." Map number 2449, 1914
Oversize: MC-999-08
Exhibit "U." Map number 2449A. [Map number 2684 is written on the back of this map], 1915
Oversize: MC-999-09
Territory served. Map number 2737, 1921
Cuyamaca Water System
Oversize: MC-999-10
Map number 2595, 1918
Oversize: MC-999-11
Showing service areas. Map number 2706, 1919
La Mesa, Lemon Grove and Spring Valley Irrigation District
Lippincott proposal
Oversize: MC-146-04
Map number 3002 (two identical maps)
Oversize: MC-146-05
Blueprint version (two identical maps)
Oversize: MC-146-06
Map showing boundaries. Map number 3055
Oversize: MC-146-07
Map showing properties involved in a proposed compromise agreement with the City of San Diego. Map number 3067 (three identical maps)
Oversize: MC-146-08
Map showing structural properties. Map number 3057, 1914
Map showing various points of diversion from the San Diego River
Oversize: MC-999-12
Map number 3030
Oversize: MC-999-13
Map number 3054, 1926
Oversize: MC-146-09
La Mesa, Lemon Grove Irrigation District and Source Supply. Map number 2577
Oversize: MC-146-10
La Mesa Reservoir and Pipeline - Eucalyptus Reservoir distribution lines. Map number 2290
Oversize: MC-146-11
Lemon Grove Flume Lines. Map number 2266
Oversize: MC-999-14
Mission Valley Pipeline. Map number 2185
Oversize: MC-146-12
Murray Hill Reservoir. Diagram showing elevation and distances. Map number 2279, 1911
Oversize: MC-999-15
North of San Diego River - Flume and Pipe Supply. Map number 2053, 1889
Oversize: MC-999-16
Rancho Mission. Map showing lands upon which the Cuyamaca Water Company owns the riparian rights. Map number 2785
Oversize: MC-999-17
San Diego County. Map showing drainage areas and reservoir sites. Map number 2108
Oversize: MC-999-18
San Diego Flume System. Map showing irrigated lands and distributing pipes. Map number 2321, 1908
San Diego Flume System and General Location of Lands and Lots
Oversize: MC-146-13
Map number 2109
Oversize: MC-146-14
This map is identical to the previous map with a different map number. Map number 2287
San Diego River
Oversize: AB-07-C01
From diverting dam to Mission Dam showing limits of riparian rights acquired. Map number 2752, 1913
Oversize: AB-07-C04
From diverting dam to Mission Dam showing limits of water bearing gravel. Map number 2647, 1913
Oversize: MC-146-15
San Diego River Case. Map number 3291, 1930

Map attached to complaint in San Diego River case in Federal court. There is a handwritten note across the top of the map that reads, "Map showing that portion of San Diego County traversed by the San Diego River and the lands embraced within the watershed there of, containing appropriate markings of the Government and Indian lands situated there in together with water filings there on."

Oversize: MC-146-16
San Diego River Drainage Areas and Safe Yield. Map number 3516
Oversize: MC-146-17
San Diego River, Stations for water plane. Map number 2644 (two identical maps), 1912
Oversize: MC-146-18
San Diego - Unidentified map. Map number 2311

This map is similar to the left half of map number 2818 (MC-147-27) titled "Mission Gorge" located in the Dams and Reservoirs Built subseries.

Oversize: MC-146-19
Unidentified graph map. Map number 2678


Oversize: MC-146-20
Alhambra Park. Map number 2349, 1912
Oversize: MC-146-21
Belmont. Map number 2220, 1912
Oversize: MC-999-19
Boston Ranch. Map number 2824, 1890
Oversize: MC-146-22
Cardiff. Map number 2286
Oversize: MC-146-23
Carr's. Map number 2222
Oversize: MC-146-24
Chase Rancho. Map number 5104
Chase Rancho - Plat
Oversize: MC-146-25
Pipe lines. Map number 2766
Oversize: MC-146-26
Subdivisions 1. Map number 2763
Oversize: MC-146-27
Choate's Addition. Map number 2193
Cholla's Road Subdivision
Oversize: MC-146-28
Includes lots 1 - 23. Map number 2188
Oversize: MC-146-29
Includes lots 24 - 45. Map number 2188
Oversize: MC-146-30
City Heights. Columbian Realty Company. Map number 2223
Oversize: MC-146-31
Culverwell and Taggart's Addition to San Diego. Map number 2197, 1869
Oversize: MC-146-32
Eastgate - Tract number 14. Map number 2280, 1912
Oversize: MC-146-33
El Cajon Heights. Map number 2805, 1894
Oversize: MC-146-34
El Cajon Heights - Plat - Block 29. Map number 2119
El Cajon Irrigation District
Oversize: MC-999-20
Present and proposed irrigation. Map number 2791 (two identical maps)
Oversize: MC-999-21
Proposed addition. Map number 2791
Oversize: MC-999-22
Showing proposed boundaries of El Cajon. Map number 2791
Oversize: MC-999-23
Southern Title Company. "Office copy." Map number 2791
Oversize: MC-146-35
El Cajon Valley - Plat - Lot 100. Map number 2856
Oversize: MC-146-36
Eureka Lemon Tract. Map number 2123, 1893
Ex-Mission Rancho
Oversize: MC-999-24
Lot number 12. Map number 2215
Oversize: MC-999-25
Lot number 12 - Subdivisions 1 and 4. [No map number]
Oversize: MC-999-26
Lot number 12 - Tract "A". Portion of Tract "A." Map number 2689
Oversize: MC-146-37
Section 28. Map number 2277, 1892
Oversize: MC-146-38
Tract "A" - Lot 12. Map number 2482
Oversize: MC-146-39
Tract "A" - Lot 12. Map number 2482
Oversize: MC-146-40
Fanita Ranch and Mission Valley. Map number 2830
Oversize: MC-999-27
Grossmont, Mt. Helix, Hawley Heights, and a Portion of Section 20. Map number 2869, 1924
Oversize: MC-146-41
H. P. Whitney's Addition to San Diego. Map number 2221
Oversize: AB-07-C02
Lake Jennings - Highway 80 - Alpine. Map number 119, 1930
Oversize: MC-146-42
Lakeside Heights. Map number 2189, 1892
La Mesa
Oversize: MC-999-28
Map number 2402
Oversize: MC-999-29
Includes La Mesa Colony. Map number 2402
Oversize: MC-146-43
La Mesa Acres - South of La Mesa Acres - Tract number 1391. No map number, 1911
Oversize: MC-146-44
La Mesa Colony - Amended map. Contour map. Map number 2329, 1891
La Mesa Springs
Oversize: MC-146-45
Map number 2332 (two indentical maps)
Oversize: MC-146-46
Westside addition. Map number 2386, 1908
Oversize: MC-146-47
La Presa and Adjourning Lands. Map number 2782
Oversize: MC-146-48
La Presa Colony. Map number 2181
Oversize: MC-146-49
Lemon Grove. No map number (two identical maps)
Lemon Grove and Vicinity
Oversize: MC-999-30
Map number 2608
Oversize: MC-146-50
Diazo photoprint. Map number 2592, 1915
Lemon Grove Subdivisions
Oversize: MC-146-51
Map number 2608
Oversize: MC-999-31
Map number 2385
Oversize: MC-146-52
Linda Vista Mesa - Camp Kearny. Map number 2680
Oversize: MC-146-53
Marlett Tract. Map number 2027, 1913
Oversize: MC-146-54
Montecello. Map number 2272, 1908
Oversize: MC-148-83
Mount Helix Calavo Gardens. Map mounted on board. No map number, 1935
Oversize: MC-146-55
Murray Hill. Map number 2602
Oversize: MC-999-32
Murray Hill Number 2. Map number 2112, 1911
Oversize: MC-146-56
Nathaniel Smith and Erwin Laraway - Division of land. Map number 2195, 1909
Oversize: MC-146-57
New San Diego. Map number 2201
Oversize: MC-999-33
Normal Heights - Index map - Road improvement district 2. Map number 2323
Oversize: MC-146-58
Orien Tract. Map number 2386, 1912
Oversize: MC-999-34
Pacific Building - Distribution system. Map number 2260, 1913
Oversize: MC-146-59
Palmateer Tract. No map number, 1912
Oversize: MC-146-60
Perris. Map number 2226, 1886
Rancho El Cajon
Oversize: MC-999-35
Portion of area. Map number 2807
"S" tract
Oversize: MC-999-36
Map number 114, 1930
Oversize: MC-146-61
Map number 118 - 1 - F (two identical maps)
Oversize: MC-146-62
Map number 2805
Oversize: MC-146-63
Boston Ranch. Map number 2773, 1923
Oversize: MC-146-64
Reed and Daley's Addition. Map number 2218
Oversize: MC-146-65
Roseland Heights. Map number 2386, 1912
Oversize: MC-146-66
San Diego, California. Map number 2224, 1910
Oversize: MC-146-67
San Diego Land and Town Addition. Map number 2205, 1886
Oversize: MC-999-37
San Diego to El Cajon Heights. Map number 2325
Oversize: MC-146-68
Silver Terrace - Amended map. Map number 2206, 1887
Oversize: MC-146-69
Spring Valley and Vicinity. Map number 2681
Oversize: MC-146-70
Spring Valley Heights. Map number 2388, 1911
Oversize: MC-146-71
Teralta. Map number 2183, 1887
Oversize: MC-146-72
Valley View. No map number, 1909
Waterville Heights
Oversize: MC-146-73
Map number 2192, 1893
Oversize: MC-146-74
Lot number 1. Map number 2483, 1914
Oversize: MC-146-75
Lot number 26, East Redlands. Map number 2483, 1914
Oversize: MC-146-76
Lot number 283. Map number 2483, 1914
Oversize: MC-146-77
West Avondale. Map number 2208, 1910

Dams and Reservoirs Built

Oversize: MC-999-38
El Cajon - Pipe lines. Map number 2486, 1915
El Capitan Dam Site
Oversize: MC-147-01
Contour map. Map number 2521
Oversize: MC-147-02
Contour map. Map number 2809, 1915
Oversize: MC-147-03
Lands. Map number 3091
Oversize: MC-147-04
Lands. Map number 3103
Oversize: MC-147-05
Survey to locate the corners of the El Capitan Dam Site. Map number 2837, 1924
Oversize: MC-999-39
Test borings - Profile. Map number 2721 (two identical maps), 1921
El Capitan Grande Indian Reservation
Oversize: MC-999-40
Map numbers 2619 - 2620
Oversize: MC-147-06
Map showing the diverting dam and flume. Map number 5171, 1930
El Capitan Reservoir
Oversize: MC-147-07
Map number 2547
Oversize: MC-147-08
Operation. Map number 2840 (two identical maps), 1924
Oversize: MC-147-09
Eucalyptus Dam and Bridge - Map number 2152
Oversize: MC-999-41
Eucalyptus Pass to La Mesa - Flume. Map number 2081
Eucalyptus Reservoir
Oversize: MC-147-10
Showing traverse of reservoir. Map number 2150, 1912
Oversize: MC-147-11
Plat. Showing various surveys. Map number 2150, 1912
Oversize: MC-147-12
Plat of pipelines. Map number 2149
Grossmont Reservoir - Plan showing requirements for pump intake
Oversize: MC-147-13
Map number 2792
Oversize: MC-147-14
Blueprint version. Map number 2792
La Mesa Dam
Oversize: MC-999-42
Contour map. Map number 2316
Oversize: MC-147-15
Map number 2493, 1915
Oversize: MC-147-16
Longitudinal section. Map number 2339, 1911
Outlet system
Oversize: MC-147-17
Map number 2492, 1915
Oversize: MC-147-18
Blueprint version. Map number 2492, 1915
Oversize: MC-147-19
Plan. Contour line map. Map number 2312, 1911
Oversize: MC-147-20
Profile. Map number 2086
Oversize: MC-147-21
Sections for proposed dams. Map number 2552
Oversize: MC-147-22
La Mesa Reservoir - Capacity and area scale. Map number 2528
Old Mission Dam
Oversize: MC-147-23
Just below the dam. Blueprint map. Map number 2729
Oversize: MC-999-43
Profile just below the dam. Map number 2730
Oversize: MC-147-24
San Diego River. Location of cable for stream measurement and automatic bristol gage. Map number 2243, 1912
Oversize: MC-147-25
San Diego Flume Company - Tower and stand. Plans and details for the Eucalyptus outlet. Map number 2151
San Vicente Reservoir
Oversize: MC-999-44
Diazo photoprint. Map number 2801
Oversize: MC-999-45
Map number 2786
Oversize: MC-147-26
Pencil drawing. Map number 2081

Dams and Reservoirs, Not Built

Oversize: MC-147-27
Albright Reservoir - Spring Valley, 1924
Oversize: MC-147-28
Alvarado Canyon Reservoir. Map number 2573, 1919
Oversize: MC-147-29
Bancroft Reservoir. Map number 2575
Boulder Creek Conduit - Contour maps, Exhibit E-2-a
Oversize: MC-147-30
Sheet number 1. Map number 2429
Oversize: MC-147-31
Sheet number 2. Map number 2429
Oversize: MC-147-32
Sheet number 3. Map number 2429
Oversize: MC-147-33
Sheet number 4. Map number 2429
Oversize: MC-147-34
Sheet number 5. Map number 2429
Oversize: MC-147-35
Sheet number 6. Map number 2429
Boulder Creek Dam Site
Oversize: MC-147-36
Cross-section, Exhibit E-1-b. Map number 2429
Oversize: MC-147-37
Plan, Exhibit E-1-c. Map number 2429
Oversize: MC-147-38
Boulder Creek Mining Claims. Map number 2783
Oversize: MC-147-39
Boulder Creek Plat Showing Power Project. Map number 2731, 1921
Oversize: MC-147-40
Boulder Creek Power Plant Site. Exhibit E-5. Map number 2429
Boulder Creek Power Project
Oversize: MC-147-41
Conduit, pipeline and powerhouse site, sheet 1. Map number 2015
Oversize: MC-147-42
Conduit, pipeline and powerhouse site, sheet 2. Map number 2016
Oversize: MC-147-43
Reservoir, dam, conduit, and powerhouse. Map number 2014
Boulder Creek Project
Oversize: MC-147-44
Map number 2044, 1913
Oversize: MC-999-46
Showing diverting dam, pipeline and power drop. Map number 2368
Oversize: MC-999-47
Together with the Cuyamaca Water Company system. Map number 2737, 1921
Boulder Creek Reservoir
Oversize: MC-147-45
Exhibit E-1-a, map showing the waterline. Map number 2429
Oversize: MC-147-46
Map showing waterline. Map number 2377
Oversize: MC-147-47
Site number 5. Map number 2370, 1913
Oversize: MC-147-48
Sites - Topographic map. Map number 2367, 1913
Oversize: MC-147-49
Conduit System - Lands to be irrigated. Map number 2750
Oversize: MC-147-50
Conejos Dam Site. Map number 2697, 1919
Oversize: MC-147-51
Conejos Reservoir. Map showing waterline. Map number 2162, 1911
Dye Canyon Reservoir
Oversize: MC-147-52
Map number 2409
Oversize: MC-999-48
Map number 2812
Oversize: MC-147-53
Map number 2450, 1914
Oversize: MC-147-54
Dye Canyon - Site number 11; Dye Canyon - Site number 12. Map number 2409, 1910
Oversize: MC-147-55
Inaja Reservation. Ownership map. Map number 2768, 1922
Oversize: MC-147-56
Inaja Reservoir Site - Cedar Creek. Map number 2469, 1914
Oversize: MC-147-57
Junipero Land and Water Company - Proposed Irrigation. Map number 2594, 1906
Oversize: MC-147-58
Kinnear Reservoir Site - El Capitan Grande Indian Reservation. Two identical maps, one with annotation. Map number 2267, 1911 - 1912
Oversize: MC-147-59
La Mesa, Lemon Grove and Spring Valley Irrigation District. Map of land required for reservoir purposes. Map number 3075, 1914
Oversize: MC-147-60
Magnolia Avenue Reservoir - Plan. Map number 2784
Oversize: MC-147-61
Miles Reservoir - Number 2. Map number 2452
Mission Gorge
Oversize: MC-147-62
Comparative profiles of dam sites. Map number 2736
Oversize: MC-147-63
Constant angle dam. Map number 2761
Oversize: MC-147-64
Graphic comparison. Map number 2778
Mission Gorge Reservoir
Oversize: MC-147-65
Map number 2716, 1921
Oversize: MC-147-66
Numbers 2 and 3. Map number 2818, 1920
Mission Gorge Reservoir on the San Diego River
Oversize: MC-999-49
Map number 2713, 1921
Oversize: MC-999-50
Map number 2742, 1921
Oversize: MC-147-67
Mount Helix Reservoir. Map number 2574, 1919
Oversize: MC-147-68
New South Fork Dam. Topographic map. Map number 2708, 1920
Oversize: MC-147-69
Pine Valley Conduit. Map number 2451, 1914
Pine Valley Reservoir - Proposed
Oversize: MC-147-70
Map, no number, 1914
Oversize: MC-147-71
Diazo photoprint. Map number 2237
Oversize: MC-147-72
Traced from Diazo photoprint. Map number 2237, 1914
Oversize: MC-147-73
Pine Valley Tunnel. Map number 2103
Oversize: MC-999-51
Poverty Gulch Dams and Reservoirs Sites. Map number 2324, 1911
Oversize: MC-147-74
Poverty Gulch Reservoir. Exhibit A. Map number 2371
San Diego River
Oversize: MC-147-75
Dam and Reservoir. Map Number 2750, 1921
Oversize: MC-147-76
Statistics of undeveloped reservoir sites. Map number 2518, 1915
Oversize: MC-147-77
Tule Dam Plan. Exhibit E-1-cc. Map number 2429
Oversize: MC-147-78
Tule Dam Site - Cross-section map. Exhibit E-1-bb. Map number 2429
Tule Reservoir
Oversize: MC-147-79
Connecting transit lines. Contour map. Map number 2427, 1914
Oversize: MC-147-80
Exhibit E-1-aa - Map showing waterline. Map number 2429

Flume Routes, Flumes, Siphons, and Tunnels

Oversize: MC-999-52
Alvarado Siphon Replacement - Profile. Map number 3252, 1929
Oversize: MC-148-01
Alvarado Siphon to La Mesa Reservoir - Plat. Map number 2578, 1917
Oversize: MC-148-02
Capehorn - Tunnel number 4. Map number 2269
Chocolate Canyon
Oversize: MC-148-03
Engine house for pump station number 2. Map number 2366
Oversize: MC-148-04
Original flume location. Includes present location of Chocolate Siphon. Map number 2868, 1925
Oversize: MC-148-05
Proposed flume - Line "B." Map number 2104
Chocolate Creek Feeder
Oversize: MC-999-53
East side of canyon. Map number 2692
Oversize: MC-148-06
Proposed. Blueprint version. Map number 2691
Oversize: MC-148-07
Proposed. Tracing cloth version. Map number 2692
Oversize: MC-999-54
West side of canyon. Map number 2693
Oversize: MC-148-08
Chocolate Creek Siphon - Forebay entrance - East end. Map number 2514, 1911
Oversize: MC-999-55
Conejos Dam Site. Conejos Creek to junction with South Fork (two identical maps). Map number 2620, 1919
Cresson Flume Line
Oversize: MC-148-09
Map number 2576
Oversize: MC-999-56
Profile. Map number 2580
Cuyamaca Water Company - Lands involved in condemnation suit. Location of flume on the lands sought to be condemned west from Chocolate Creek Siphon
Oversize: MC-148-10
Map number 2866, 1925
Oversize: MC-148-11
Blueprint version. Map number 2866, 1925
Oversize: MC-148-12
El Cajon Grant - Flume location. Map number 2080
Oversize: MC-999-57
El Cajon Valley - Profile. Map number 2080
Oversize: MC-148-13
El Capitan and Chocolate Creek. Boundaries in red flags; white flags on contours. No map number, 1921
Oversize: MC-148-14
El Capitan Dam Site - Lands sought in San Diego condemnation suit. Map number 3295, 1931
El Capitan Grande Indian Reservation
Oversize: MC-148-15
Flume line. Map number 2077
Oversize: MC-148-16
Lands granted to the City of San Diego by an Act of Congress. Lands involved in the condemnation suit. Map number 3280
Pumping plant number 3
Oversize: MC-148-17
Map number 2417, 1914
Oversize: MC-148-19
Cloth version. Map number 2417, 1914
Oversize: MC-148-18
Blueprint version. Map number 2417, 1914
Oversize: MC-148-20
Township lines - Boundaries of number 15. Map number 2289, 1879
El Capitan Reservoir
Oversize: MC-148-21
Dam site - Private lands and Indian reservation. Map number 2724
Oversize: MC-148-22
Showing dam. Map number 2685, 1921
Oversize: AB-07-C08
El Monte to La Mesa - Flume line. Map number 3158
El Monte Tunnel and Lankersheim Tunnel
Oversize: MC-148-23
Proposal - Relocation between the two tunnels. Map number 2028, 1913
Oversize: MC-999-58
Proposed change of flume line. Map number 2028, 1913
Oversize: MC-148-24
El Monte Tunnel number 5 and 6. Map number 2269
Oversize: MC-148-25
El Monte Tunnel number 7. Map number 2269
Oversize: AB-07-C09
End of Flume Line to College Hill Tract - Profile of located pipeline. Map number 2071, 1889
Oversize: MC-999-59
Eucalyptus Reservoir - Section of flume to be replaced - Profile. Map number 3411
Oversize: MC-148-26
Kuehner Property. Hamilton, El Capitan Dam Site, including the flume and Chocolate Creek Pumping Plant. Map number 2546, 1915
Oversize: MC-999-60
Lakeside - Service area. Map number 2025, 1913
Oversize: AB-07-C06
Lakeview Siphon - Profile. Map number 2364, 1913
La Mesa Dam
Oversize: MC-148-28
Experimental line for small flume. Map number 2081
Oversize: MC-999-61
Main wood pipe. Map number 2334
La Mesa Ditch
Oversize: MC-148-27
Cut-off tunnel. Map number 2557, 1917
Oversize: MC-999-62
Profile. Map number 2318, 1895
Oversize: MC-999-63
Reconstruction. Map number 2503, 1915
La Mesa, Lemon Grove and Spring Valley Irrigation District
Oversize: MC-148-29
Profile. Profile of cut-off siphon "B" and "C," flume section number 9. No map number, 1929
Oversize: AB-07-C03
Flume Replacement. Map number 2170, 1932
Oversize: MC-999-64
Los Coches Siphon. Diverting Dam to mile post number 1, tunnel number 6 to Los Coches Siphon. No map number
Oversize: MC-999-65
Morris Line - Profile. Map number 2301