40Total Dams
12High Hazard
14Significant
Dam Safety in Cattaraugus County, New York
Cattaraugus County has 40 dams tracked in the National Inventory of Dams. Of these, 12 are classified as high hazard — meaning failure would probably cause loss of human life. Another 14 carry a significant hazard classification. Currently, 2 dams have a condition assessment of poor or unsatisfactory.
The average dam in Cattaraugus County is 64 years old. The most common purpose is recreation. The tallest dam is Nys Atomic Development Dam #1 at 95 ft.
Explore more: Oldest dams in New York · Tallest dams · High risk dams · Largest reservoirs
| Dam | Hazard | Condition | Height (ft) | Purpose | Year |
|---|---|---|---|---|---|
| Conewango Creek Site 19 Dam | High | Fair | 65 | Flood Risk Reduction | 1971 |
| Ischua Creek Watershed Dam #6a | High | Fair | 63 | Recreation | 1971 |
| Ischua Creek Watershed Dam #5 | High | Fair | 54 | Flood Risk Reduction | 1961 |
| Ischua Creek Watershed Dam #4 | High | Fair | 51 | Flood Risk Reduction | 1961 |
| Conewango Creek Site 16 Dam | High | Fair | 51 | Flood Risk Reduction | 1964 |
| Conewango Creek Site 1 Dam | High | Fair | 48 | Flood Risk Reduction | 1969 |
| Conewango Creek Site 16a Dam | High | Fair | 42 | Flood Risk Reduction | 1970 |
| Ischua Creek Watershed Dam #2 | High | Satisfactory | 42 | Flood Risk Reduction | 1961 |
| Holimont Upper Reservoir Dam | High | Satisfactory | 35 | Other | 2003 |
| Tannenbaum Reservoir Dam | High | Satisfactory | 31 | Other | 2006 |
| Ischua Creek Watershed Dam #1 | High | Fair | 27 | Flood Risk Reduction | 1964 |
| Harwood Lake Dam | High | Fair | 22 | Recreation | 1963 |
| Quaker Run Dam | Significant | Satisfactory | 59 | Recreation | 1930 |
| Conewango Creek Site 13 Dam | Significant | Not assessed | 39 | Flood Risk Reduction | 1982 |
| Ischua Creek Watershed Dam #3 | Significant | Satisfactory | 38 | Flood Risk Reduction | 1966 |
| Camp Chautauqua Pond Dam | Significant | Not assessed | 36 | Recreation | 1965 |
| Rotary Lake Dam | Significant | Not assessed | 26 | Recreation | |
| Red House Lake Dam | Significant | Not assessed | 26 | Recreation | 1929 |
| Edgar Ploetz Recreational Pond Dam | Significant | Poor | 22 | Recreation | 1969 |
| Rainbow Lake Dam | Significant | Not assessed | 22 | Other | 1964 |
| Efner Davis Pond Dam | Significant | Poor | 21 | Recreation | 1961 |
| Sunset Saddle Dam | Significant | Not assessed | 20 | Other | |
| Richard Weishan Pond Dam | Significant | Not assessed | 16 | Recreation | 1961 |
| William O Nannen Pond Dam | Significant | Fair | 15 | Recreation | 1964 |
| Cabic Pond Dam | Significant | Not assessed | 15 | Fish and Wildlife Pond | 1964 |
| Lime Lake Outlet Dam | Significant | Not assessed | 12 | Recreation | 1850 |
| Nys Atomic Development Dam #1 | Low | Not assessed | 95 | Water Supply | 1963 |
| Camp Lakeland Pond Dam | Low | Not assessed | 47 | Recreation | 1964 |
| Nys Atomic Development Dam #2 | Low | Not assessed | 45 | Water Supply | 1963 |
| Science Lake Dam | Low | Not assessed | 28 | Recreation | 1925 |
| Alpine Heights Pond Dam | Low | Not assessed | 20 | Recreation | 1975 |
| Vee Pond Dam | Low | Not assessed | 16 | Other | 1947 |
| Monte Shields Farm Pond Dam | Low | Not assessed | 15 | Flood Risk Reduction | 1955 |
| Stuart Klahn Dam | Low | Not assessed | 14 | Other | 1952 |
| Lyle Harwood Recreational Pond Dam | Low | Not assessed | 13 | Recreation | 1967 |
| Cattaraugus County Sportsmans Dam #1 | Low | Not assessed | 12 | Recreation | 1966 |
| James Hughey Dam | Low | Not assessed | 10 | Recreation | 1964 |
| Bentley Wildlife Marsh Dam | Low | Not assessed | 10 | Fish and Wildlife Pond | 2001 |
| H Tigler Wildlife Dam | Low | Not assessed | 7 | Other | |
| Lyle Underwood W L Pond #2 Dam & Dike | Low | Not assessed | 7 | Other | 1954 |