Table 3. Water budget for northern and southern parts, and the entire LI budget area (1940-65).
| Water-Budget Element | Northern Part (million gallons/day) | Southern Part (mgd) | Entire Water- Budget Area (mgd) | 
| Precipitation | 650 | 950 | 1,600 (100%) | 
| Evapotranspiration of precipitation | 325 | 470 | 795 (50%) | 
| Groundwater recharge | 320 | 465 | 785 (49%) | 
| Direct runoff | 5 | 15 | 20 (1%) | 
| Streamflow discharging to salt water | 50 | 290 | 340 (21%) | 
| Groundwater discharge to streams | 45 | 275 | 320 (20%) | 
| Subsurface outflow of groundwater | 270 | 180 | 450 (28%) | 
| Evapotranspiration of groundwater | 5 | 10 | 15 (1%) | 
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