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SPDSS_Task64_ReviewDevelopPrecipitationRechargeEstimates
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SPDSS_Task64_ReviewDevelopPrecipitationRechargeEstimates
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Last modified
4/17/2013 9:36:20 AM
Creation date
6/11/2008 2:20:57 PM
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Decision Support Systems
Title
SPDSS Task 64 - Review and Develop Precipitation Recharge Estimates
Description
This memorandum presents the general approach used to develop monthly precipitation recharge estimates for both the Denver Basin and South Platte alluvial ground water models.
Decision Support - Doc Type
Task Memorandum
Date
5/11/2007
DSS Category
Groundwater
DSS
South Platte
Basin
South Platte
Contract/PO #
C153953
Grant Type
Non-Reimbursable
Bill Number
SB01-157, HB02-1152, SB03-110, HB04-1221, SB05-084, HB06-1313, SB07-122
Prepared By
Leonard Rice Engineering
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The following additional information related to the curves shown in Figure 2 was obtained <br />through discussions with individuals (Ken Knox and Willem Schreuder) involved in the model <br />development: <br />• The Alluvium 1 and Alluvium 2 curves represent the tributary areas, with Alluvium 1 <br />used to characterize specific (flashy) behavior. <br />• The curves were extrapolated back to zero from approximately 12 inches of total <br />precipitation. <br />The results shown in Figure 3 indicate that precipitation recharge is sensitive to soil type and that <br />the sensitivity significantly increases as total precipitation increases. <br />~r~~igi~ati~n R~~h~re ~r~~~ <br />Rapublrean Rhre~ ~eillame~rf w8del ~nllan 1 ~~ <br /> <br /> <br />a <br />u5 <br />~r <br />4 ~ <br />~~ <br />Q <br />L <br />~ ~ <br />-•-•-••~oara Han-hi al~rd -~----~-----t- <br />~eerJr Irrlguf~ i i i <br />Yeldlum Hon-I okd i i i <br />ill~dlum IKIip i i i <br />~.......FIn414un-Inrlpgtfd -~----~-----t- <br />Fln~ kdq~d i i i <br />•-------~IIY~Iyrn 1 H911"Irrrr~~Sled I I I <br />~lluyfllrn 1 IrrlgQttd -_~----~-___-~- <br />•-------,Uluahlrn ~ Hon-Irr~oNd I I I <br />~Iluvhlrn ~ IrriQ i i i <br />i i i <br />-------'r--------i-------'y---------r--------1--------y-- <br />I I I I I I <br />I I I I I I <br />I I I I I I <br />I I I I I I <br />I I I I I I <br />_._._._.L._._._._J_._._._.J._._._._.L._._._._J_._._._.J._ <br />•~------~------+-------~------t <br />i i i i i <br />i i i i i <br />i i i i i <br />•1------~------t-------~------ <br />i i i i <br />I I I I I <br />•1------~------~-------~- -~ <br />I I I I I <br />i i i i <br />i i i i <br />'r--------1-------'y-- -'r-------i' <br />I I ~ ~ I I <br />I I I <br />I I I I ~~ <br />'~ --------~-' ~------ - -'~ I <br />I I ~Mr~ I <br />,~ I f <br />Q <br />u7 <br />Q <br />~sr,•l <br />I <br />--------F--------i--------i---------F--------i--------i--- - { i--- <br />r~------ <br />I I I I I rrr I +~-, <br />I I I I I ~ ~~f~ <br />I I I I ~~ ~ Jr~~ I <br />--------~ --------~-------- ~-------- ~- err- Y ~P~ ~ '--- - - <br />---~.--~i~•-•- <br />Q 5 1~ 15 ~Q 2~ 3G 3~ ~4 45 5Q 55 EG <br />Pnecfpllailan ~lnchel~~ <br />Figure 3. Precipitation Recharge Curves Developed for the Republican River Basin <br />z Figure 3 was copied from Appendix F of the report that summarizes the Republican River Basin model <br />development, "Republican River Compact Administration, Ground Water Model; July 1, 2003" <br />Task 64.doc 5 of 13 <br />
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