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County of Santa Clara Board of Supervisors ,. COP Y " BE IT RESOLVED AND ORDERED that the lOth day of May, 1950, be and it is hereby determined as the last date upon which a departmental estimate for the department's expenditure program for the fiscal year 1950-51 may be submitted to the Auditor of the County of Santa Clara. IT IS FURTHER ORDERED that the County Auditor be and he is hereby directed to notify each department head in the government of the County of Santa Clara of this Resolution and the directives thereof. PASSED AND ADOPTED by the Board of Super.visors of the County of Santa Clara, Sta.te of California, this Jrd day of April 1950, by the following vote: AYES: Supervisors, Campbell, McKinnon, Pfeifle, Wool, Brown NOES: Supervisors, None ABSENT~ Supervisors, None A. W. BROWN (SIGNED) Chairman of said Board of Supervisors ATTEST: E. T. McGEHEE, County Clerk and ex officio Clerk of Said Board By RICHARD OLSON (SEAL) The foregoing instrument is a correct copy .of the original on file in this office ATTEST: April 5, 1950 E. T. McGEHEE County Clerk and ex-officio Clerk of the Superior Court of the State of California in and for the County of Santa Clara By R. OLSON (SIGNED) Deputy COP Y I I Report to the Honorable Board of ,Directors OF THE SOUTH SANTA CLARA VALLEY WATER CONSERVATION DISTRICT ON Uvas Creek Darn, Reservoir, Conduit and Well Replenishment ProjectProposed to be Constructed Jointly with Santa Clara Valley Water Conservation District AND ON Proposed Llagas Creek Darn, Reservoir and Well Replenishment Project ~~ Project Report No. 15 March 1953 ~~ BUCKlE AND WOOD Civil Engineers SAN FRANCISCO I /' (" ;,.{ { i i i LEGEND ;:::: =;~ A__ ::..~;SS(."WC Do.I...d CO....'ll"... ~ =:= E~~~~.. ~ I BUCKlE AND WOOD CIVIL AND CONSULTING ENGINEERS 544 MARKET STREET SAN FRANCISCO 4, CALIF. March 13, 1953 Subject: South Santa Clara Valley Water Conservation District Description of Proposed Projects HONORABLE BOARD OF DIRECTORS, South Santa Clara Valley Water Conservation District Gilroy, California Gentlemen: This description of the proposed Llagas Creek and Uvas Creek well replenishment project has been prepared pursuant to your instructions. In January, 1952, we outlined a similar project that involved 10,000 acre feet of storage on Uvas Creek. The feature is the same in this project as in the former proposed project. It has since been proposed and the details have been worked out to provide 34,000 acre feet of storage on Uvas Creek, jointly with the Santa Clara Valley Water Conservation District, hereinafter referred to as the Northern District. This Uvas development is to be jointly paid ~or and the water jointly used on the basis of 60 per cent to the Northern District and 40 per 'cent to this District. This results in a greater amount of water for this Distri,t ata lower unit cost per acre foot. The area of the District is 34,900 acres extending from Tennant Ave- nue on the north to the Pajaro River on the south. The descriptive details of its organization, valuation, etc., were covered in Project Report 14 on file with the District. This report also went into considerable detail on surface and underground water supply and water requirements and replenishment of the underground supply that could be obtained from the proposed works. These details will not be repeated in this report. Progress Report 14 shows the estimated average overdraft from the underground basin to be 7,300 acre feet annually for ten year period 1941 to 1951, as compared with the State's estimate of 8,000 acre feet annually under 1948-49 conditions. This is remarkably close agreement for estimates of this nature obtained by different parties on different bases. Overdraft is that quantity of water extracted from the underground basin in excess of that replenished by natural or artificial percolation and 3 inflow. It is expected that with full development of the area, this overdraft will more than double. By the herein proposed works the flood runoff on both Llagas and U vas Creeks will be captured. Prior water rights will be satisfied and the balance will be released, under control, down the stream channels so that it may percolate to the underground reservoir and thus replenish the wells. The District made application to the State for the water rights for this I project in the latter part of 1950. This fixes the priority of the application, I but the right itself depends on beneficial use. In addition, due diligence , is required to consummate a water right. In other words, it is necessary to put the proposed works into operation in the immediate future or the rights that have been initiated will be lost. In that case they may be lost forever. Water has become too scarce and valuable in California to permit delays in development by one area when another wishes to proceed. In Project Report 14 under the effect of the proposed works, it is stated "that had the proposed works been operated under the coordinated plan outlined from 1942 to 1951, the following results could have been ac- complished. (1) The supply available for the City of Gilroy could have been practically ten times its actual diversion in 1948 and about double its total use in that year; (2) The supply available for use from the underground basin along Uvas and Carnadero Creeks could have been more than doubled; (3) The percolation to the ground water from Llagas Creek could have been increased by approximately 9,500 acre feet per year on an average. or 30 per cent more than the estimated overdraft in this same period; and (4) The maximum recorded 24 hour average flow at Llagas Dam of 3,550 cubic feet per second could have been reduced to about .600 cubic feet per second, with approximately proportional reductions at the lower end of the District. It appears evident from the above that all of the present water prob- lems of the District would be solved by the proposed works and that a rea- sonable margin would be available for development during the immediate future. The above statements can now be made even more strongly with the larger proposed Uvas Creek storage. Because of this and the imminent danger of losing these readily available sources of additional water supply forever, it is felt that the proposed works should be constructed at the earli- est possible date. PROPOSED WORKS The proposed works are divided into two projects; one, the Llagas Creek Dam, Reservoir and Well Replenishment Project, and the other, the Uvas Creek Dam, Reservoir, Well Replenishment and Conduit to the Llagas 4 Creek, the construction of which is proposed to be undertaken jointly with the South Santa Clara Valley Water Conservation district and the Santa ,Clara Valley Water Conservation District. The description will therefore be divided into two parts. The Llagas Creek Reservoir Works The physical works proposed consist of storage on Llagas Creek, with 4000 acre feet dedicated to water conservation and 3500 acre feet reserved for flood control. The dam-site is about ~ mile upstream from Lane's Bridge and about three miles west of Morgan Hill. The proposed dam would be constructed of rolled earth fill, with a concrete lined spillway on the north abutment of sufficient capacity to pass safely the maximum peak flow and an outlet pipe through the south abutment capable of passing 750 cubic feet per second. The dam would be of more or less conventional design, have a length on top of about 650 feet and a heighth above stream bed of 90 feet. It will be necessary to relocate the county roads and several access roads that would be flooded by the stored water. The County will require higher standards for the relocated county roads than for existing roads. Because of the necessity of locating the new roads above the flood line of the proposed reservoir, it will require their construction in more rugged terrain than the existing roads. The relocated county road would be on the left or northerly side of the proposed reservoir. Releases from the reservoir would be made directly to Llagas Creek. There are 27 square miles of watershed tributary to the proposed res- ervoir and it is estimated that the mean annual runoff is 16,500 acre feet. A substantial amount of flood damage has occurred in the lower end of the District during periods of peak flow in wet seasons. One of the major contributing factors is the inability.of Lower Llagas Creek to handle flood flows without spilling over the banks of its poorly defined channel. This condition will be greatly, if not entirely, alleviated by the construction of. a dam and reservoir capable of providing 7500 acre feet of storage, as pro- posed, thus permitting the withholding of water and reducing peak flows. Channel works and constructing levies on the lower two miles of the stream incident to the purposes of the District will also help rectify the condition. Estimated Cost of Proposed Work Llagas Dam and Appurtenances $815,000. Llagas Road Relocations 306,000. Llagas Flood Channel Works 35,000. Llagas Rights of Way 400,000. TOTAL $1,556,000. 5 The Uvas Creek Dam, Reservoir and Conduit Works The Uvas Creek Dam, Reservoir and Conduit Works as proposed will be undertaken jointly by the South Santa Clara Valley Water Conservation District and the Santa Clara Valley Water Conservation District with the northern district paying 60% of the cost and being entitled to 60% of the water, and the balance of the cost will be paid for by the South Santa Clara Valley Water Conservation District and it will be entitled to 40% of the water. The physical works proposed consist of providing for 34,000 acre feet of storage on Uvas Creek. The damsite is at the site of the present City of Gilroy diversion dam and about seven miles northwest of Gilroy. The pro- posed dam would be constructed of rolled earth fill, with a concrete lined spillway on the left or north abutment of sufficient capacity to pass safely the maximum peak flow and an outlet pipe through the left abutment cap- able of passing 93 cubic feet per second. The dam would be of more or less conventional design, have a length on top of about 1280 feet and a height above stream bed of 160 feet. It will either be necessary to relocate the County road and several access roads that would be flooded by the stored water or for the Districts to purchase the land on and through which the roads extend. Since most of this area is rugged terrain and the land is worth comparatively little, it is suggested that the District purchase the land rather than relocate the roads. A large saving will therefore be effected. The cost of the project as hereinafter set forth is based upon acquiring the land in- stead of relocating the roads. Releases from the reservoir would be made directly to the City of Gilroy pipe line, the stream bed for downstream users and percolation and to the proposed Llagas Creek conduit. The proposed conduit to Llagas Creek will consist of 2.4 miles of re- inforced concrete pipe of 48 inch inside diameter, extending from the con- trol valve at Uvas dam, through the divide between the Uvas Creek and Llagas Creek watersheds on the Watsonville Road, and about 1.7 miles of canal extending from the end of the pipe line to Llagas Creek. This District would require 30 cubic feet per second and the Northern District 50 cubic feet per second or a combined capacity of 80 cubic feet per second. The Northern District would take delivery of its water at a diversion structure at the end of the pipe line on the north side of Watsonville Road and its con- duit would extend northerly from this point. There are 30 square miles of watershed tributary to the proposed reservoir. The average annual runoff has been estimated by the State to be about 23,700 acre feet. (\ Estimated Cost of Proposed Works (40% of total cost) Uvas Dam and Appurtenances Uvas-Llagas Conduit Uvas Rights of way TOTAL $1,463,600. 135,600. 512,400. $2,111,600. , Accompanying this report and hereby made a part hereof is a map Plate 1 with the title "South Santa Clara Valley Water Conservation District General Map," dated January, 1953. The proposed works are shown thereon. Respectfully submitted, Blackie and Wood By Harold Woods " 7 Ql)ffirt nf t1Jt ibntrlt nf hptnrl.anr.a nf................~....~.~m........................<ttnuttty &tutt nf QtuUfnmta Date..m.........~~....I4..m...................m., 19__~' In the matter of the Sal~ of Tax Deeded } Property by the County Tax Collector Pursuant to a notice of intention to sell at public auction certain tax deeded properties and request for approval thereof filed with this Board of Supervisors by the Tax Collector oL._...._~....C.1a_..__......County, .m..m.....~~_m~.._n' 19_4'., it is resolved that approval be and it is hereby granted for said sale as set forth in the said notice and the said tax collector is hereby directed to sell the property as provided by law for a sum not less than the minimum price set forth '. n w n '. "'ol1olrlas the 4-..1p~ of _Jl panel. The parcel or parcels of property that are the subject of this resolution are deeded to the State of California for delinquent taxes and are situated in the County oL-----~~m~_~.~~m__..____m...____m.mm__' State of California, being more particularly described as follows: I __. 'T l6-S01d to State - June 27, 1942, For Taxes of 1941, Sale No. 1066 Deeded ~o State - June 2$, 1947, Deed-No. 12 - Vol. 14, Pg.7 North G~lroy.Tr. to center Ronan Ave., 67.17 ft. NE of center Carlyle Ave., NE 94.52 ft.X S 100 ft. of Lot 3, Blk. 2 Last Assessee: S. N. & G. Hillyard - Minimum Price $50.00 Deeded to State - June 26; 193$; D~~d-N~:-56- -n~, "'~-"'.m.__...,",,",{ In Town of Gilroy . - Vol. 10, Pg. 6 Thos.Rea Subd.E.71 ft.of S.25 ft of Lot 2 Blk 3 S R 2 ~T. Al R S b dr.>' ," g. V~ so lea u ..c..71 ft.of Lot 3,Blk.3 S.Rg.2 w. ' Last Assessee: vI. Daicher - Minimum Price $55.00 t t.! \ ".' ' I . . The foregoing resolution was duly passed and adopted by the Board of Supervisors 01...000..000.......__._.__000000___000__.. SaI*. Olea 2.. ~ ., ..,. _. __.. __.. __ ..______..___.. .____. ..000_.__ ____.. _ _. __000 County, the__ _ _..... '____"" ______. _..n _ _ _..m..cla y 0 f __.000.. 000 ..__. ..____ 000.. 000""_ ....._ __.__...000..' 19. __.000., AIBlRtt I. JIJIf.tDI Attest: .._. _ _.._ _... __ ...._.._ _._ _ n ___ __ _ n n _ _ _.. _ _..... _ _ n_ _ _____ __ _ __.... _. _.. Clerk <t (S . A L) IlIClWIJ) 01.8OJl (. ~,) By: .... 000__' _. 000 000"" '__'000 .____ m.______.m ..____... __ __.__ __ ____. ..000..... ...__ Deputy FORM 4 FORM TC 20