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<br />9.2 Missouri River Framework Study- As part of the Missouri River Framework Study, <br />generalized soil infiitration maps were developed for the entire South Platte River Basin. <br /> <br />9.3 Previous Studies- Previous studies for a watershed or a nearby watershed can also <br />provide an excellent source of information in determining infiitration rates for a given basin. <br />An example use of previous studies is shown below for the Denver Area. <br /> <br />Table 7-7 <br /> <br />" <br /> <br />U.S. Army Corps of Engineers <br />. Water and Related Land <br />Resources Management Study <br />Metropolitan Denver and South <br />Platte River and Tributaries <br />Colorado, Wyoming, and <br />Nebraska <br /> <br />South PI<Jtte High <br />Tributari17s <br /> <br />r METHOD INFlLTRA nON <br /> RATES <br />in Northfolk Sprinkler 1.07inlhr <br /> lnfiltrometer <br /> Generalized Soil 0.60 ~ 2.00 in/hr <br /> Infiltration Groupings <br /> based on undisturbed <br /> percolation tests <br />in Reconstitution of 1965 0.86 in/ltr <br /> flood for Cherry Creek <br /> Reservoir <br /> Based on SCS soil 0.60 . 1.00 inIIrr <br /> groups <br />Creek Based on SCS soil 0.51 - 0.78 inIIrr <br /> groups <br />Plains Generalized Soil 0.50 inlhe <br /> Infiltration Groupings <br /> based on undisturbed <br /> percolation tests <br /> <br />AGENCY - TITLE LOCATIO~ <br /> <br />U.S. Dep. of Agriculture - A <br />Study o{the Infiltration <br />Capacities of Some Soil Groups Cherry Creek Bas <br />in the Cherry Creek Watershed <br />in Central Colorado <br /> <br />Missouri Basin Inter-Agency <br />Committee - The Missouri RMA Vicinity <br />River Basin Comprehensive <br />Framework Study - Hydrologic <br />Analysis <br /> <br />U.S. Anny Corps of Engineers <br />- Chatfield Dam and Reservoir, Cherry Creek Bas <br />Design Memorandum No. PC. <br />2, Hydrology <br /> <br />Urban Drainage and Flood <br />Control District - lrondale Irondale Gulch <br />Gulch and DFA 0055 <br />Stormwater Outfall Systems <br />Plan <br /> <br />Urban Drainage and Flood <br />Control District ~ Second Second and Third <br />Creek, Third Creek, DFA 0053 <br />& Barr Lake Drainage Basin <br />Planning, Hydrology Report <br /> <br />Colorado Flood <br />Hydrology Manual <br /> <br />DRAFT <br /> <br />7.31 <br />