Laserfiche WebLink
River and canal losses as described in Section 3.5 and Table 3-6 are incorporated in the <br />routing tool based on water year classification. The river reaches for which these losses <br />were developed coincide with the reaches in the routing tool. <br />Program water is routed `on top of the historical hydrology, diversions, and return flows <br />in the Platte River and NPPD and CNPPID systems constrained to the remaining <br />available capacity. Historical daily data for the period of 1947 through 2006 was obtained <br />from the USGS and Nebraska DNR. It is not known if a period of missing data is a zero <br />value or simply a period of non-recorded flow. Therefore periods of missing data were <br />filled with averages of recorded values. The average daily flow from the respective <br />calendar day for the Average, Wet, or Dry year classifications was substituted for missing <br />data. See Section 3.3 for more explanation on how the Average, Wet, and Dry water year <br />classifications were determined. <br />Sites that required filling included: <br />• Roscoe Gage - Missing water years 1947 through 1982 <br />• Korty Diversion - Missing fall months for water years 1955 through 1977 <br />• Keystone Diversion - Missing fall and spring months from water years 1955 <br />through 1977 <br />• North Platte Hydro Return - Missing winter months for water year 1956 and fall <br />months for water years 1968, 1969 and 1977 <br />• CNPPID Diversion at North Platte - Missing December 1989 <br />• Jeffrey Return - Missing the fall through spring months with occasional summer <br />days for water years 1955 through 1977; winter months for water years 1978 and <br />1992; fall months water year 1993 <br />• J-2 Return - Missing December 1989; days in July and August 2000 <br />The first Program water to be routed through the system is that available from the <br />Tamarack I Project on the South Platte River, as measured below the Western Canal, and <br />an estimate of the required release from Lake McConaughy. The estimated release from <br />EI042E Page 26 of 58 January 29, 2008 <br />PRRIP - Draft Water Management Study, Phase I