Missouri has 35 high hazard dams with a condition assessment of poor or unsatisfactory. These are dams where failure would probably cause loss of human life and where recognized safety deficiencies have been identified.
Of the 1475 high hazard dams in Missouri, 35 (2%) have concerning condition ratings — 1 rated poor and 34 rated unsatisfactory.
Condition scale, best to worst
- Satisfactory No existing or potential safety deficiencies recognized; acceptable performance expected under all loading conditions.
- Fair No deficiencies under normal operating conditions; a rare flood or earthquake could create one.
- Poor A safety deficiency is recognized under normal operating conditions; remedial action is necessary.
- Unsatisfactory Worst rating. The dam is considered unsafe; a deficiency requires immediate or emergency remedial action.
"Not rated" means no assessment is on file in the National Inventory of Dams.
| Dam | County | Height (ft) | Condition | Last inspected | Purpose | Year |
|---|---|---|---|---|---|---|
| Fletcher Tailings Dam | Reynolds | 201 | Unsatisfactory | 01/05/200917 yrs ago | Tailings | 1965 |
| Gun Club Lake Dam | Washington | 85 | Unsatisfactory | 08/22/200620 yrs ago | Tailings | 1962 |
| Upper Little Black D-2 | Ripley | 73 | Unsatisfactory | 12/03/20214 yrs ago | Flood Risk Reduction | 1989 |
| Lake Waukomis Dam | Platte | 68 | Unsatisfactory | 10/25/20223 yrs ago | Recreation | 1968 |
| Sayersbrook Dam | Washington | 67 | Unsatisfactory | 11/25/20205 yrs ago | Recreation | 1971 |
| Lake Wauwanoka Dam | Jefferson | 60 | Unsatisfactory | 02/15/20233 yrs ago | Recreation | 1942 |
| Khani Dam | St. Charles | 57 | Unsatisfactory | 07/22/20215 yrs ago | 2001 | |
| Zuni Lake Dam | Crawford | 51 | Unsatisfactory | 01/04/20197 yrs ago | Recreation | 1977 |
| Sterling Hollow | Texas | 50 | Poor | 04/19/20215 yrs ago | ||
| Porzeinski Lake Dam | St. Francois | 50 | Unsatisfactory | 04/29/20197 yrs ago | ||
| Tapawingo Lake Dam | St. Louis | 49 | Unsatisfactory | Not reported | Recreation | |
| Trimble Lake Dam-east | Callaway | 48 | Unsatisfactory | 07/17/198640 yrs ago | Other | 1958 |
| Richwoods Mine B Dam | Washington | 48 | Unsatisfactory | 10/28/20214 yrs ago | Tailings | 1943 |
| Clark Dam | Cape Girardeau | 47 | Unsatisfactory | Not reported | ||
| Whetstone Creek Big Lake Dam | Callaway | 47 | Unsatisfactory | 03/09/20215 yrs ago | Recreation | 1956 |
| Crane Lake | Iron | 46 | Unsatisfactory | 04/25/20215 yrs ago | Recreation | 1971 |
| Dresser Ind. Old #1 | Washington | 45 | Unsatisfactory | 12/01/20205 yrs ago | Tailings | 1968 |
| Vitale Lake | Pike | 44 | Unsatisfactory | Not reported | ||
| Lakeside Lake | Jackson | 44 | Unsatisfactory | Not reported | Recreation | 1982 |
| Spring Fork Lake Dam | Pettis | 43 | Unsatisfactory | 10/07/20206 yrs ago | Water Supply | 1925 |
| Wings Lower Lake Dam | Washington | 42 | Unsatisfactory | Not reported | Recreation | 1996 |
| Sandy Creek | Lincoln | 41 | Unsatisfactory | Not reported | Recreation | 2012 |
| Forest Haven Lake | Jackson | 41 | Unsatisfactory | Not reported | Recreation | 1981 |
| Blair Lake Dam | Pike | 40 | Unsatisfactory | Not reported | Recreation | |
| Wings Lake Upper Dam | Washington | 40 | Unsatisfactory | Not reported | Recreation | 1998 |
| Madison Mine Main Dam | Madison | 40 | Unsatisfactory | 11/29/20187 yrs ago | Tailings | 1950 |
| Evans Lake | Camden | 39 | Unsatisfactory | Not reported | Recreation | 1988 |
| Timber Creek Lake Dam | Jefferson | 39 | Unsatisfactory | 04/29/20197 yrs ago | 1982 | |
| Kool Breeze Ridge Dam | Perry | 39 | Unsatisfactory | 01/05/20233 yrs ago | Recreation | 1976 |
| Token Lake Dam | Franklin | 38 | Unsatisfactory | Not reported | Recreation | |
| Tcj Landco Dam | Crawford | 38 | Unsatisfactory | 10/16/20196 yrs ago | Recreation | 2006 |
| Glass Lake Reserve, LLC | Camden | 38 | Unsatisfactory | Not reported | Recreation | 2002 |
| Gladstone Lake Dam | Boone | 37 | Unsatisfactory | Not reported | Recreation | 1986 |
| Brex Lake Dam | Boone | 37 | Unsatisfactory | Not reported | Recreation | |
| Greystone Lake | Buchanan | 37 | Unsatisfactory | Not reported | Recreation |