Rattlewood Golf Course
Rattlewood Golf Course is an earth dam located in Montgomery County, Maryland, built in 1975. It carries a Significant hazard potential classification and has a satisfactory condition assessment.
About Rattlewood Golf Course
The primary purpose of Rattlewood Golf Course is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Montgomery County Revenue Authority (local government). It impounds the Patuxent River-tr near Mt Airy.
The dam stands 31 feet tall and stretches 400 feet across, creates a reservoir covering 3 acres, has a maximum storage capacity of 50 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1975, the structure is well into its service life at over 50 years 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 satisfactory, indicating no existing or potential dam safety deficiencies are recognized. An emergency action plan is in place for this dam. The most recent inspection on record was 05/30/2024.
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Location
| State | Maryland |
| County | Montgomery |
| Nearest City | Mt Airy |
| River/Stream | Patuxent River-tr |
| Coordinates | 39.34000, -77.18900 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 31 ft |
| Dam Height | 31 ft |
| Dam Length | 400 ft |
| Year Completed | 1975 (51 years old) |
Storage & Hydraulics
| NID Storage | 50 acre-ft |
| Max Storage | 50 acre-ft |
| Normal Storage | 24 acre-ft |
| Surface Area | 3 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 10 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Irrigation |
| Owner | Montgomery County Revenue Authority |
| Owner Type | Local Government |
| Hazard Classification | Significant |
| Condition Assessment | Satisfactory |
| Last Inspection | 05/30/2024 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | MD00380 |
| Federal ID | MD00380 |
| More Info | State Dam Safety Program |