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Last modified
1/26/2010 2:25:25 PM
Creation date
10/12/2006 2:03:46 AM
Metadata
Fields
Template:
Water Supply Protection
File Number
8543.400
Description
Projects in the Closed Basin Division - Reports
State
CO
Basin
Rio Grande
Water Division
3
Date
7/8/1975
Title
Closed Basin Report
Water Supply Pro - Doc Type
Report/Study
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<br />.' <br /> <br />anticipate continuous monitoring of the water level. to gain a baclt- <br /> <br />grouQd of illformaUon on which to balle the project operation. <br /> <br />Another item of high pl-1ority is to drill "~"~I pump test wells. This <br /> <br />woul~ involve pump testing from wells constr~cted specifically for this <br /> <br />purpose which hopefully could later be used for production wells. The <br /> <br />pu~p testa will deter~ine the aquifer characteristics such as trans- <br /> <br />m18aivity, specific yield, storage coefficient, etc., for the aquifer. <br /> <br />Specific yield ia the amount of water yielded from water-bearing material <br /> <br />by gravity drainage. The storage coefficient is the volume of wate.r an <br /> <br />aquifer releases from or takes into storage, per unit surface area of <br /> <br />the aquifer, per unit change in head" For unconfined aquifers it 111. <br /> <br />virtually equal to specific yield. These values can be determined by <br /> <br />continuous pu:ping at a constant rate over a period of several days and <br /> <br />l,.... -,...-.....--.-..,...... <br />"'J ........-...................J <br /> <br />~~=~~;~~b c~=~~:~t~~~ <br /> <br />......1'_ ",.........................I.f_... .l...... <br />...---... ................-....--..0 ....- <br /> <br />......--.oA <br />r --~ -- <br /> <br />well to measure drawdowns. In connection with this testing we would <br /> <br />also perforo leaky a'luif er tests. These tests are simply pum.p t.ests <br /> <br />with observation wells also in the artesian aquifer. These tests will <br /> <br />measure the effect on t' e artesian aquifer from pumping the shallow <br /> <br />aquifer. We do not expect that waters of the artesian aquifer will b. <br /> <br />_ffected by pumping from the shallow aquifer. About the middle of <br /> <br />fiscal year 1976 we would also initiate wacer quality monitoring from <br /> <br />the obse:vation well network. This monito::ing will be continued through- <br /> <br />out the preconstt'uction, construction and ,o?eration phases of the Closed <br /> <br />Ballin Division. <br /> <br />9 <br /> <br />,-. '-" 3 <br />" I . . \J <br />1.,._ v <br /> <br />II <br /> <br />._~."" - <br />
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