Section D
Water Supply, Demand and Water Budget
The Tule River Basin IRWM planning area is approximately 673 square miles and is situated within the Tule Subbasin of the San Juaquin Valley Groundwater Basin. Section D provides a discussion and analysis of the current and projected water supply and demand for the Tule River Basin IRWM planning area from 2020-2040. The region’s water supply and demand balance is summarized in the table below. This section also outlines surface water supplies and water demand for each water management district, and provides an analysis of the region’s groundwater supply. All water management districts within the IRWM planning area receive groundwater supplies from the Tule Basin.
Table D-15. Table summarizing of the region’s water supply and demand balance.
| Average Surface Water Supplies (2001-2010) | Groundwater Supply (Based on Tule Basin Safe Yield, AF/Year)* | Groundwater Demand (District Demand – District Surface Supply) | % of Total Groundwater Demand | Total Water Demand (2010 Data, AF/Year) | Water Supply Demand Balance (AF/Year) | |
|---|---|---|---|---|---|---|
| Lower Tule River ID | 178,057 | 126,299 | 294,240 | 53.65% | 472,297 | -167,941 |
| Pixley ID | 32,461 | 69,446 | 161,788 | 29.50% | 194,249 | -92,342 |
| Porterville ID | 26,631 | 17,327 | 40,368 | 7.36% | 66,999 | -23,041 |
| Saucelito ID | 30,592 | 9,661 | 22,507 | 4.10% | 53,099 | -12,846 |
| Tea Pot Dome WD | 6,128 | 830 | 1,933 | 0.35% | 8,061 | -1,103 |
| Terra Bella ID | 20,472 | 4,801 | 11,185 | 2.04% | 31,657 | -6,384 |
| City of Porterville | 0 | 5,314 | 12,380 | 2.26% | 12,380 | -7,066 |
| East Porterville | 0 | 564 | 1,314 | 0.24% | 1,314 | -750 |
| Terra Bella | 0 | 255 | 593 | 0.11% | 593 | -338 |
| Tipton | 0 | 196 | 456 | 0.08% | 456 | -260 |
| Pixley | 0 | 255 | 593 | 0.11% | 593 | -338 |
| Woodville | 0 | 134 | 312 | 0.06% | 312 | -178 |
| Poplar | 0 | 190 | 443 | 0.08% | 443 | -253 |
| Allensworth | 0 | 36 | 84 | 0.02% | 84 | -48 |
| Teviston | 0 | 94 | 218 | 0.04% | 218 | -124 |
| IRWMP Region | 294,341 | 235,400 | 548,414 | 100% | 842,755 | -313,014 |
