| Location: | LAT. 39-42-43, LONG. 91-21-16. HANNIBAL, MO; RIGHT BANK; AT HANNIBAL WATER WORKS; 1000 FT DOWNSTREAM OF THE WABASH RAILROAD BRIDGE; 309.0 MI UPSTEAM FROM CONFLUENCE OF OHIO RIVER. |
| General Information: | DRAINAGE AREA 137,200 SQUARE MILES. FLOOD STAGE = 16.00 FT. |
| Zero Gage Datum: | 449.43 ft NGVD 29 NOTE: SUBTRACT DATUM FROM ELEVATION TO OBTAIN STAGE. |
ALL VALUES RECORDED AT 8AM. ELEVATION IN FT: