Dieterich Dam #2
Dieterich Dam #2 is an earth dam located in Dutchess County, New York, built in 1910. It carries a Significant hazard potential classification and has a poor condition assessment.
About Dieterich Dam #2
The primary purpose of Dieterich Dam #2 is fire protection, stock, or small fish pond. The dam maintains a small impoundment used for fire suppression, livestock watering, or as a fish pond. The dam is owned by Madapen Farm Llc (private). It impounds the Mill Brook near Millbrook.
The dam stands 14 feet tall and stretches 525 feet across, creates a reservoir covering 3 acres, and has a maximum storage capacity of 14 acre-feet. Completed in 1910, 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 poor, meaning the dam has recognized safety deficiencies that require remediation to address risks. The most recent inspection on record was 03/22/2023.
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Location
| State | New York |
| County | Dutchess |
| Nearest City | Millbrook |
| River/Stream | Mill Brook |
| Coordinates | 41.79000, -73.67222 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 14 ft |
| Dam Height | 14 ft |
| Dam Length | 525 ft |
| Year Completed | 1910 (116 years old) |
Storage & Hydraulics
| NID Storage | 14 acre-ft |
| Max Storage | 14 acre-ft |
| Normal Storage | 12 acre-ft |
| Surface Area | 3 acres |
| Max Discharge | 1,150 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Fire Protection, Stock, Or Small Fish Pond |
| Owner | Madapen Farm LLC |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Poor |
| Last Inspection | 03/22/2023 |
| Emergency Action Plan | No |
Identifiers
| NID ID | NY13821 |
| Federal ID | NY13821 |
| More Info | State Dam Safety Program |