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• Outflows: o Groundwater pumping o Surface water deliveries o Shortage (if applicable) The average annual water demand for the subbasin within the calibration period was 1.2 million acre-feet (MAF), consisting of approximately 1.1 MAF agricultural demand and 0.1 MAF urban demand. This demand was met by approximately an average annual of 0.50 MAF of surface water deliveries (0.45 MAF of agricultural and 0.05 MAF of urban deliveries) and was supplemented by approximately 0.69 MAF of groundwater production(0.62 MAF of agricultural and 0.07 MAF of urban pumping).The annual estimated land and water use budgets for the calibration period are presented in Figure 47a-47g and Figure 48a-48g, showing the agricultural and urban, respectively, demands and water supplies in the ESJ Subbasin and its component subareas. Due to uncertainties in the reported and estimated values of agricultural and urban water supplies, as well as respective estimates of the demands,there are some imbalances between the demand and supply values.These imbalances are shown as surplus or shortage and are typically less than 10%of the reported supplies, and within the margin of errors of the analysis. 4.4.2 Groundwater Budget The primary components of the groundwater budget, corresponding to the major hydrologic processes affecting groundwater flow in the model area, are: • Inflows: o Deep percolation (from rainfall and excess irrigation applied water) o Gain from stream (or recharge due to stream seepage) o Recharge (from other sources such as irrigation canal seepage and recharge ponds) o Boundary inflow(from outside the model area) o Subsurface inflow(from adjacent subregions) • Outflows: o Groundwater pumping o Loss to stream (or outflow to streams and rivers) o Boundary outflow(to outside the model area) o Subsurface outflow(to adjacent subregions) • Change in groundwater storage (either an inflow or outflow) The groundwater budget consists of inflows to and outflows from the groundwater system. Figure 49a- 49g show the annual components of the groundwater budget, including cumulative change in groundwater storage for ESJ Subbasin. Primary components of the groundwater budget are as follows: average annual groundwater pumping is estimated to be 0.70 MAF,which is offset by approximately 0.22 MAF of deep percolation from rainfall and applied water, net gain from stream of 0.15 MAF, recharge from conveyance and unlined canals of approximately 0.12 MAF, and a total net subsurface inflow of San Joaquin County 4-4 Woodard&Curran ESJWRM Report August 2018