| Impacts - E19 Information |
| 29.0 Feet | Minor flooding is expected along the lower portions of the Russian River. |
| 32.0 Feet | Minor flooding is forecast along the lower Russian River. Lower Mill Street in Guerneville and Old Bohemian Highway in Monte Rio are expected to flood. |
| 33.0 Feet | Moderate flooding is forecast to occur with the lowest sections of Guerneville and Monte Rio expected to flood. The south end of the Guerneville bridge is expected to be inundated. Mirabel Trailer Park and Resort are forecast to begin flooding. |
| 35.0 Feet | Moderate flooding is forecast along the lower Russian River. Numerous businesses and residences in the lowest sections of towns within the reach are expected to flood. Mill, lower 4th and 5th Street in Guerneville are forecast to flood. Redwood Drive in Northwood is forecast to flood. |
| 37.0 Feet | Significant flooding can be expected throughout the lower portions of the Russian River. Mirable Park will be flooded. Mirabel Road is expected to flood at River Road. Rio Nido village is forecast to begin flooding. River Road east of Guerneville and River Boulevard east of Monte Rio are expected to flood. |
| 38.0 Feet | Significant flooding is expected to occur throughout the lower portions of the Russian River. Freezout Road between Monte Rio and Duncan's Mills will be inundated. Highway 116 is expected to become flooded below the Cazadero Road intersection. |
| 39.0 Feet | Significant flooding is expected to occur along the lower portions of the Russian River. River Road, along with a few houses, will flood at the town of Hacienda. Armstrong Woods Road, 4th Street, and Mill Street are forecast to flood. The village of Northwood Grove and Monte Rio School are expected to becom inundated. |
| 40.0 Feet | Major flooding is expected along the Russian River. Many roads in Guerneville, Monte Rio, Rio Nido, and Hacienda will be flooded. |
| 42.0 Feet | Major flooding is expected to occur throughout the entire reach of the lower Russian River. Many roads, homes, and businesses along the Russian River will become inundated. |
| 44.0 Feet | Major flooding is forecast to occur along the entire reach of the lower Russian River. Many roads along the reach will become inundated making travel very difficult. Some homes and businesses along the Russian River are expected to become flooded. |
| 45.0 Feet | Disastrous flooding is forecast to occur along the lower Russian River. Much of downtown Guerneville will become inundated. Many roads will flood making travel nearly impossible throughout the reach. |
| 47.0 Feet | Disastrous flooding can be expected along the Russian River. Much of Guerneville will be flooded up to the north side of Main Street. All towns along the reach will experience disastrous inundation to roads, homes, and businesses. Travel through towns along the Russian River will become impossible. |
| 48.0 Feet | Disastrous flooding can be expected for all towns along the lower Russian River. Travel in areas near the river will be impossible with many roads inundated. At least 30,000 acres of farm land will be flooded in the lower Russian River basin. |
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