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| SACRAMENTO RIVER - SHASTA LAKE (SHDC1) | ||||||||||||||||||
| Latitude: 40.72º N | Longitude: 122.42º W | Elevation: 1070 Feet | ||||||||||||||||
| Location: Shasta County in CA | ||||||||||||||||||
| River Group: Upper Sacramento | ||||||||||||||||||
| Issuance Time: | Jul 01 2025 at 9:17 AM PDT |
| Please Note: | Ensemble forecasts produced by CNRFC only consider meteorological uncertainty and do not account for hydrologic uncertainty. Flow data on this product are unregulated / full natural flow. |
| Monthly Probability Plot |
| Monthly Streamflow Volume (1000s of Acre-Feet) Data Updated: Jul 01 2025 at 9:22 AM PDT | ||||||
| Prob | Jul* | Aug | Sep | Oct | Nov | Dec |
| 10% | 226.0 | 211.0 | 211.0 | 279.0 | 477.3 | 1180.5 |
| 25% | 223.7 | 208.2 | 205.2 | 236.9 | 352.0 | 756.6 |
| 50% | 223.2 | 206.7 | 201.0 | 213.0 | 236.8 | 392.1 |
| 75% | 222.6 | 206.0 | 199.4 | 205.2 | 201.5 | 254.0 |
| 90% | 222.4 | 205.9 | 199.0 | 202.5 | 194.3 | 205.9 |
| Mean | 228.0 | 202.2 | 195.1 | 228.3 | 307.0 | 548.0 |
| %Mean | 97.9 | 102.2 | 103.0 | 93.3 | 77.1 | 71.6 |
| Prob | Jan | Feb | Mar | Apr | May | Jun |
| 10% | 1476.3 | 1574.5 | 1462.6 | 1141.0 | 897.5 | 524.2 |
| 25% | 884.5 | 1046.2 | 1208.3 | 795.0 | 680.2 | 349.5 |
| 50% | 557.3 | 618.2 | 774.2 | 533.8 | 413.5 | 281.9 |
| 75% | 324.9 | 343.5 | 513.1 | 367.3 | 306.5 | 223.2 |
| 90% | 259.3 | 275.1 | 348.8 | 320.0 | 240.1 | 198.8 |
| Mean | 699.2 | 793.6 | 909.1 | 643.1 | 501.2 | 312.1 |
| %Mean | 79.7 | 77.9 | 85.2 | 83.0 | 82.5 | 90.3 |
| Note 1: %Mean is the "Median forecast monthly value (50%)" divided by the "monthly mean" (displayed as a %) | ||||||
| Note 2: For current month, graphic represents remaining forecast only, text represents observed + remaining forecast. | ||||||
| Location Photographs | ||
| ESRI™ Locator Map |
| Official 7 Day National Weather Service Forecast (CAZ013) |
| Today: Mostly sunny in the morning, then mostly cloudy with a chance of rain showers early in the afternoon. Mostly cloudy with a chance of showers and thunderstorms late in the afternoon. Highs 81 to 96 higher elevations and 92 to 100 lower elevations. Light winds becoming southwest up to 10 mph in the afternoon. Tonight: Mostly cloudy with a chance of rain showers and a slight chance of thunderstorms in the evening, then clear after midnight. Lows 56 to 71 higher elevations and 65 to 75 lower elevations. Prevailing northwest winds up to 10 mph shifting to the north after midnight. Wednesday: Mostly sunny. A slight chance of showers and thunderstorms in the afternoon. Highs 83 to 98 higher elevations and 94 to 104 lower elevations. Light winds. Wednesday Night: Mostly clear. A slight chance of rain showers in the evening. Cooler. Lows 53 to 68 higher elevations and 62 to 71 lower elevations. Prevailing northwest winds up to 10 mph. Thursday: Mostly sunny. Highs 77 to 92 higher elevations and 88 to 96 lower elevations. Prevailing north winds up to 10 mph shifting to the west in the afternoon. Thursday Night: Mostly clear. Cooler. Lows 50 to 65. Independence Day: Sunny. Highs 74 to 89. Friday Night through Monday: Clear. Lows 52 to 67. Highs 78 to 93. |