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WSP04817
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Last modified
1/26/2010 2:15:45 PM
Creation date
10/12/2006 12:40:08 AM
Metadata
Fields
Template:
Water Supply Protection
File Number
8273.600.20
Description
Colorado River Basin Salinity Control - Federal Agencies - USDA
Basin
Colorado Mainstem
Water Division
5
Date
1/1/1995
Title
Monitoring and Evaluation Report - Lower Gunnison - Colorado Unit - 1995 Annual Reprt
Water Supply Pro - Doc Type
Annual Report
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<br />~ <br />tv <br />F~ <br />UJ <br /> <br />The 1.994 - 1995 snowpaCK was a real eye opener! April <br />brought the beginning of what was to become a three <br />month wet period. As the snowpack continued to <br />increase, the historical averages began a rapid decline, <br />producing a skyrocketing percent of average. By June 1 <br />the snowpack had increased to over 300% of average. <br />Temperatures remained well below normal, inhibiting <br />snowmelt even at lower elevations; perhaps saving this <br />area from snowmelt flooding. <br /> <br />Precipitation during the six month growing season (April <br />through September) was l78% of average. Temperature <br />during the first 4 months of this growing season was <br />only 92% of average, while August and September were <br />near average. <br /> <br />2\ Hvdrosalinitv sites <br /> <br />Using estimates of deep percolation and seepage <br />reductions from irrigation improvements and translating <br />these into salt load reductions is the basis for showing <br />project salinity impacts. To obtain this information <br />the Lower Gunnison, Colorado Unit (LGCU) will supplement <br />the.M&E program in the Grand Valley, ColQrado Unit <br />(GVCU). A minimum of 5 hydrosalinity sites will be <br />maintained for collection and evaluation of data. . <br /> <br />Major activities identified for 1.995 were: <br />a) Measure surface inflow onto the monitored field. <br />b) Measure surface outflow from the field. <br />c) Collect climatic data to estimate evapotranspiration <br />(ET). <br />d) Measure soil moisture content at strategic times to <br />assess seasonal changes and compare with ET data. <br />e) Monitor throughout the project area the length of <br />existing earth ditches replaced by pipeline or ditch <br />lining. <br />f) Monitor throughout the project area the number of <br />acres directly benefitted by installation of <br />salinity control practices. <br /> <br />7 <br />
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