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| COSUMNES RIVER - MICHIGAN BAR (MHBC1) | ||||||||||||||||||
| Latitude: 38.50º N | Longitude: 121.04º W | Elevation: 168 Feet | ||||||||||||||||
| Location: Sacramento County in CA | ||||||||||||||||||
| River Group: San Joaquin | ||||||||||||||||||
| Issuance Time: | Jan 09 2026 at 8:59 AM PST |
| 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: Jan 09 2026 at 9:06 AM PST | ||||||
| Prob | Jan* | Feb | Mar | Apr | May | Jun |
| 10% | 140.2 | 197.7 | 190.3 | 112.3 | 86.4 | 26.6 |
| 25% | 103.5 | 127.0 | 143.5 | 87.4 | 56.3 | 16.1 |
| 50% | 83.1 | 61.1 | 85.1 | 47.9 | 23.9 | 11.0 |
| 75% | 75.1 | 32.4 | 48.8 | 27.6 | 13.6 | 7.7 |
| 90% | 74.4 | 17.2 | 18.9 | 14.5 | 10.2 | 6.1 |
| Mean | 61.4 | 71.7 | 89.1 | 61.9 | 38.4 | 14.0 |
| %Mean | 135.3 | 85.2 | 95.5 | 77.4 | 62.2 | 78.6 |
| Prob | Jul | Aug | Sep | Oct | Nov | Dec |
| 10% | 12.9 | 8.4 | 6.1 | 9.4 | 21.6 | 123.7 |
| 25% | 8.7 | 6.1 | 4.8 | 5.8 | 9.3 | 29.9 |
| 50% | 7.3 | 5.0 | 4.1 | 4.1 | 5.4 | 12.6 |
| 75% | 5.5 | 4.2 | 3.5 | 3.5 | 3.9 | 6.5 |
| 90% | 4.3 | 3.4 | 2.7 | 2.7 | 3.1 | 3.8 |
| Mean | 4.0 | 1.6 | 1.3 | 2.8 | 8.1 | 33.8 |
| %Mean | 182.5 | 312.5 | 315.4 | 146.4 | 66.7 | 37.3 |
| 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 (CAZ017) |
| Today: Mostly cloudy in the morning then becoming partly cloudy. Areas of frost and patchy dense fog in the morning. Highs around 54. North winds up to 10 mph. Tonight: Mostly cloudy. Patchy dense fog after midnight. Lows around 38. Light winds. Sunday: Patchy fog in the morning. Mostly cloudy. Highs around 55. Light winds. Sunday Night: Mostly clear. Patchy fog after midnight. Lows around 37. Light winds. Monday: Partly cloudy in the morning then clearing. Patchy fog and frost in the morning. Highs around 53. Light winds. Monday Night: Mostly clear. Patchy fog. Lows around 39. Tuesday: Mostly sunny. Patchy fog. Highs 52 to 58. Tuesday Night: Mostly clear. Patchy fog. Lows 37 to 43. Wednesday: Partly cloudy. Patchy fog. Highs 54 to 60. Wednesday Night: Mostly clear. Patchy fog. Lows 39 to 45. Thursday: Partly cloudy. Patchy fog. Highs 56 to 62. Thursday Night and Friday: Mostly clear. Lows 40 to 46. Highs around 60. |
| Flood Impacts | |
| 13.2 Feet | Water floods houses in Wilton. The south bank levee near Wilton is overtopped. |
| 12.0 Feet | Water flows on to the road near Wilton. |
| 8.0 Feet | Low lying lands along the river begin to flood. |