| Flood Impacts |
| 30.0 | THE LEVEE TOP IS REACHED - WATER WILL BEGIN TO OVERTOP THE LEVEES. MAJOR FLOODING OF PRESIDIO AND SURROUNDING FARMLAND IS LIKELY. |
| 25.8 | THE RECORD STAGE FOR THE PERIOD OF RECORD (1978) IS REACHED. A HIGHER STAGE WAS REACHED IN 1932...BUT THE EXACT STAGE IS UNKNOWN. HIGHWAY 170 WILL BE FLOODED DOWNSTREAM OF PRESIDIO. FARMLAND AROUND THE RIVER WILL REMAIN INUNDATED. |
| 25.0 | RIVER REMAINS BETWEEN LEVEES AT PRESIDIO ALTHOUGH CONTINUED FLOWS AT THIS LEVEL COULD CAUSE DAMAGE TO THE LEVEES. HIGHWAY 170 DOWNSTREAM WILL LIKELY BE FLOODED AND IMPASSABLE IN SPOTS. FARMLAND AROUND THE RIVER WILL CONTINUE TO BE INUNDATED. |
| 23.0 | WATER REMAINS BETWEEN LEVEES AT PRESIDIO BUT AREAS DOWNSTREAM MAY EXPERIENCE SIGNIFICANT FLOODING. HIGHWAY 170 DOWNSTREAM OF PRESIDIO MAY FLOOD IN SPOTS. FARMLAND ALONG RIVER WILL LIKELY BE INUNDATED. DAMAGE TO LEVEE SYSTEM IS POSSIBLE. |
| 20.0 | RIVER REMAINS BETWEEN LEVEES. THE FLOOD PLAIN BETWEEN THE LEVEES INUNDATES. EROSION OF THE LEVEE IS LIKELY. SEEPAGE OF WATER THROUGH THE LEVEE MAY RESULT IN FLOODING OF AREA FARM LAND. |
| 15.5 | MINOR FLOODING OF THE FLOOD PLAIN BETWEEN THE LEVEES OCCURS. NO DAMAGE TO STRUCTURES IS EXPECTED. |
| 12.0 | BANKFULL STAGE. FLOOD PLAIN BETWEEN THE LEVEES BEGINS TO FLOOD. NO DAMAGE IS EXPECTED. |
