| Location: | LAT. 38-52-18, LONG. 90-09-27, ON UPPER END OF RIVERWARD GUIDE WALL, AT MILE 201.1 ABOVE THE MOUTH OF THE OHIO RIVER. |
| Gage: | STAFF GAGE FLOAT WELL AND G.O.E.S. TELEMETERED DATA COLLECTION PLATFORM. OWNED, OPERATED AND MAINTAINED BY ST. LOUIS DISTRICT, CORPS OF ENGINEERS. |
| General Information: | MAXIMUM REGULATING POOL ELEVATION, 419.00 FEET NGVD. DRAINAGE AREA, 171,500 SQUARE MILES. NOTE: LOCK & DAM 26 (REPLACED BY MELVIN PRICE LOCK & DAM) REACHED MAXIMUM REGULATED POOL (419.0 FEET NGVD) ON AUG 08, 1938. MELVIN PRICE LOCK AND DAM REACHED MAXIMUM REGULATED POOL (419.0 FEET NGVD) ON 01 FEB 1990. |
| Records Available: | ELEVATION, FEB. 1990 TO DATE, IN FILES OF CORPS OF ENGINEERS. |
| Mean Elev: | PERIOD OF RECORD, 418.31 FT . |
| Extreme Elev: | PERIOD OF RECORD, DAILY HIGH OF 438.50 FT OCCURRING ON MULTIPLE DATES WITH THE MOST RECENT ON 02 AUG 1993 & PERIOD OF RECORD, DAILY LOW OF 411.67 FT ON 16 MAR 1994 . |
| Zero Gage Datum: | 395.48 ft NGVD 29 NOTE: SUBTRACT DATUM FROM ELEVATION TO OBTAIN STAGE. |
ALL VALUES RECORDED AT 8AM. ELEVATION IN FT: