Table 3. Evaluation of the annual average water resources for the subsidence areas from 2003‒2010.
| Subsidence area | Source of water | (4) | (5) | Water resource quantity | ||
|---|---|---|---|---|---|---|
| (1) | (2) | (3) | ||||
| WSP and RNWA | RG | FUP | Drainage | FUP subtracting repeated volume | ||
| XQ | 12.0 | 3.2 | 393.2 | 396.5 | 393.2 | 408.3 |
| ZJ | 37.7 | 21.1 | 550.5 | 534.1 | 154.0 | 212.8 |
| GBGQ | 9.0 | 0.4 | 0.0 | 0.0 | 0.0 | 9.3 |
| DJX | 2.3 | 0.3 | 0.0 | 0.8 | 0.0 | 2.7 |
| DJD | 0.9 | 0.1 | 0.0 | 0.9 | 0.0 | 0.9 |
| PYPS | 40.5 | 6.7 | 221.0 | 193.3 | 209.8 | 257.0 |
| PB | 4.3 | 0.8 | 9.3 | 11.2 | 9.3 | 14.4 |
| Total | 106.6 | 32.5 | 1,174.0 | 1,136.8 | 766.3 | 905.3 |
The water resource quantities are calculated as (1)+(2)+(3)+(5). (Unit 106 m3). WSP and RNWA are water surface precipitation and runoff from no-water areas, RG is recharge from groundwater, FUP is flow from upstream, and ‘FUP subtracting repeated volume’ represents the FUP minus the drainage of the upstream subsidence area. For instance, the FUP subtracting repeated volume of ZJ is its FUP minus the drainage of XQ, which is its upstream subsidence area. PB is the upstream subsidence area to PYPS.