| Forecast Period | 90% Exceedance Volume | 70% Exceedance Volume | 50% Exceedance Volume | Percent Average | 30% Exceedance Volume | 10% Exceedance Volume | |
| Santa Clara | |||||||
| Pine Valley, Nr | April-July | 1.3 | 1.3 | 1.3 | 26 | 1.3 | 1.4 |
| May-July | 0.91 | 0.92 | 0.93 | 23 | 0.96 | 1.1 | |
| Virgin | |||||||
| Virgin | April-July | 21 | 21 | 21 | 36 | 22 | 23 |
| May-July | 14.2 | 14.5 | 14.8 | 39 | 15.4 | 16.5 | |
| Hurricane, Nr | April-July | 12.9 | 13.4 | 13.8 | 22 | 15 | 16.8 |
| May-July | 8.9 | 9.4 | 9.8 | 24 | 11 | 12.8 | |
| Littlefield | April-July | 12.2 | 12.5 | 13 | 20 | 13.9 | 15.8 |
| May-July | 6.4 | 6.7 | 7.2 | 16.7 | 8.1 | 10 |