| 24.0 | VERY SEVERE FLOODING OCCURS. THE RALSTON SEWAGE TREATMENT PLANT LEVEES MAY BE OVERTOPPED WHEN THE STAGE REACHES 24 FEET. | | 22.0 | SEVERE AGRICULTURAL FLOODING OCCURS. WATER LEVELS ARE WITHIN 2 FEET OF TOPPING THE RALSTON SEWAGE TREATMENT LEVEES WHEN THE STAGE REACHES 22 FEET. | | 21.0 | SEVERE AGRICULTURAL FLOODING OCCURS. WATER LEVELS NEED TO BE PATROLLED AS THE LEVEES AROUND THE RALSTON SEWAGE TREATMENT PLANT ARE TOPPED WHEN THE STAGE REACHES 24 FEET. | | 20.0 | SEVERE AGRICULTURAL FLOODING OCCURS. THE LEVEE AROUND THE RALSTON SEWAGE TREATMENT PLANT MAY NEED TO BE PATROLLED. | | 18.0 | MODERATE INUNDATION OF FARMLANDS OCCURS MAINLY ALONG THE NORTH BANK. | | 16.0 | MINOR AGRICULTURAL FLOODING OCCURS ON THE NORTH BANK. |
|
1) 23.00 ft on 06/11/1923
2) 22.98 ft on 10/13/1973
3) 22.82 ft on 04/25/1944
4) 22.60 ft on 11/15/1964
5) 22.60 ft on 11/18/1964
|
Low water records are unavailable.
|
|
