Lake Maratanza Dam
Lake Maratanza Dam is an earth dam located in Ulster County, New York, built in 1923. It carries a Significant hazard potential classification and has a fair condition assessment.
About Lake Maratanza Dam
The primary purpose of Lake Maratanza Dam is water supply. The dam stores water for municipal, industrial, or agricultural use, helping ensure a reliable supply for the surrounding area. The dam is owned by Nysoprhp - Palisades Interstate Park Commission;village Of Ellenville (local government). It impounds the Tr-verkeerder Kill near Crawford.
The dam stands 12 feet tall and stretches 1,000 feet across, creates a reservoir covering 38 acres, has a maximum storage capacity of 323 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1923, the structure is over a century old.
This dam has a significant hazard potential classification, meaning that a failure could cause significant economic damage — flooding roads, bridges, or property downstream — but is not expected to result in loss of life. Its condition is rated fair — the dam has minor deficiencies that are being addressed or do not pose an immediate safety threat. An emergency action plan is in place for this dam. The most recent inspection on record was 06/21/2023.
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Location
| State | New York |
| County | Ulster |
| Nearest City | Crawford |
| River/Stream | Tr-verkeerder Kill |
| Coordinates | 41.67806, -74.34972 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 12 ft |
| Dam Height | 12 ft |
| Dam Length | 1,000 ft |
| Year Completed | 1923 (103 years old) |
Storage & Hydraulics
| NID Storage | 323 acre-ft |
| Max Storage | 323 acre-ft |
| Normal Storage | 133 acre-ft |
| Surface Area | 38 acres |
| Drainage Area | 0 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Water Supply |
| Owner | NYSOPRHP - PALISADES INTERSTATE PARK COMMISSION;VILLAGE OF ELLENVILLE |
| Owner Type | Local Government |
| Hazard Classification | Significant |
| Condition Assessment | Fair |
| Last Inspection | 06/21/2023 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | NY01433 |
| Federal ID | NY01433 |
| More Info | State Dam Safety Program |