WSP07978 - Laserfiche WebLink

Home Browse Search

~ t .. I , I f ~ I I I I . 1'720 The operating principles provide: "During the non-irrigation season the District will provide an allowance for stock watering purposes of not more than a daily mean flow of five second-feet or its volume equivalent measured at a gage to be located near and above the Baca River headgate. If the stream gains from the Trinidad Dam to the said gage are insufficient to fulfill the allowance, an equivalent volume of reservoir inflow will be released to satisfY stock water demands within the allowance". (Emphasis added) Reclamation's pre-Project planning model assumed that Trinidad Reservoir would be operated to: "Store in Trinidad Reservoir under Model right (maximum rate of700 cfs and 20,000 acre foot filling) winter (November through March) flows of the Purgatoire River historically diverted for winter irrigation of project lands which are in excess of flows required to meet the lesser of either the historical diversions or the decreed rights of the Ninemile and Highland Canals and 5.0 cfs passed through the reservoir for livestock or domestic watering purposes. Useable project computed return flow is to be considered available to meet the downstream rights. " (Underlining added) The operating principles provide that during the non-irrigation season, generally the period October 16 through March 31, a volume equivalent to 5.0 cfs of reservoir inflow as measured at the Trinidad gauge and inclusive of river gains from Trinidad Dam to the Trinidad gauge will be allowed by the District for stock water releases. Reclamation's pre-Project model assumptions term this release as "pass through the reservoir. II Therefore, Reclamation concludes that the District may release the stock water as an equivalent volume provided the seasonal volume is not , \ i I . 17 '\ . J " , .J!', -'>:.\. - '.'J, -'.. ,...,~t" .. . :-- ;i;