Laserfiche WebLink
and unpublished calculations made during Task 48. All calculated inflows and outflows used <br />in t11e calibrated model will be documented in fl1e Task 48.1 Stress Inputs TM. Preliminary <br />values estimated for the steady state calibration period (1991-1994) and the sources of the <br />estimates are shown in Table 3-6. <br />The groundwater budget terms with t11e most tulcertainty include estimated discharge to <br />streams, reservoir leakage, subirrigation and changes >11 storage. Estimated discharge to streams <br />has a relatively large tulcertainty because stream gage records do not exist which would allow <br />this term to be calculated for a number of tributaries. Reservoir leakage 11as a relatively high <br />level of uncertainty because leakage estimates have been calculated using generalized soil <br />characteristics and reservoir storage estimates since insufficient data are available for direct <br />estimates. Subirrigation has a relatively large uncertainty because no data exist and the value is <br />based on an estimated percent of the maximum potential subirrigation (difference between crop <br />water requirement and all water supplies) computed >lz StateCU. The change in groundwater <br />storage, typically not included in a steady state water budget, leas a relatively large uncertainty <br />because it was estimated using the preliminary groundwater model by calculating the <br />additional water needed to maintain water levels in these tributaries at stream elevations. <br />Therefore this term includes both storage declines in some designated basins and alluvial <br />tributaries as well as other uncertainties associated with an un-calibrated prelim>11ary model. <br />Accordingly, the water budget presented in Table 3-6 should be considered preliminary. <br />P~ SPDSS T~8 2 Final TM 10-08-0t~.doc 13 <br />