WSP02011 - Laserfiche WebLink

Home Browse Search

Conclusions and Recommendations Flows as they were developed are considered to adequately represent appraisal level estimates of model inflows, Two sets of vi'1!in flow estimates for Upper Gunnison inflows (INFLS throogh INFLS1) were developed, Adjusted inflows were developed for which negative values in difference files were eliminated and set to zero, This adjustment was made by reducing contributing core station flow values for those months in which negatives occurred, Adjusted inflows represent a more conservative water supply situation than unadjusted values, Flows for contributing areas located upstream are reduced, while lower intervening area flows are increased, Unadjusted inflows may more represent virgin flow conditions on a , long-term annual average basis, However, using unadjusted flows results in negative values occurring in difference files, It is therefore recommended that adjusted inflow file values be used: they represent a more conservative water supply scenario, and eliminate negative inflows from occurring in difference files, Should the opportunity arise for reiteration of inflow development, several changes which would result in the reduction in frequency and magnitude of negative difference file values should be considered: Irrigation Depletions: Present virgin flow derivation has used estimates of irrigation consumptive use to approximate stream depletions attributable to irrigation, As such, these depletions do not adequately address the storage within the soil of early irrigation season diversions and subsequent later season return flows, If possible, future flow development should consider the accounting of irrigation depletions in terms of actual diversions and return flows. 1 i 37 . . .