Groveville dam
Groveville
Groveville, also known as Glenham Dam, is a private hydroelectric dam located in Dutchess County, New York. Constructed in 1875, this gravity dam stands at 37.3 feet tall with a hydraulic height of 51.8 feet and a structural height of 44.3 feet. The dam has a storage capacity of 43 acre-feet and serves multiple purposes including fire protection, stock, small fish pond, and hydroelectric power generation.
Managed by the Federal Energy Regulatory Commission (FERC), Groveville plays a crucial role in controlling the flow of Fishkill Creek and has a maximum discharge capacity of 19,960 cubic feet per second. The dam's spillway, which is uncontrolled, has a width of 140 feet. Despite its high hazard potential, the condition assessment of Groveville is currently not available, but it undergoes regular inspections with the last one conducted in September 2020. The risk assessment for the dam is rated as moderate, highlighting the importance of ongoing monitoring and management measures to ensure its safety and functionality.
With its historical significance and vital role in water resource management and renewable energy generation, Groveville stands as a testament to the enduring impact of infrastructure projects on local ecosystems and communities. As an integral part of the hydrological system in Dutchess County, this dam serves as a reminder of the delicate balance between harnessing natural resources for human benefit and protecting the environment for future generations. Enthusiasts of water resources and climate change will find Groveville to be a fascinating case study in the intersection of engineering, ecology, and sustainability.
Plan around the weather
Same NOAA / yr.no feed Snoflo's iOS app uses. Watch the precipitation column on the meteogram -- rain on the basin upstream typically lifts inflow 24-72 hours later.
Next 5 days, hour by hour
Temperature line with weather symbols on top, snow + rain accumulation as columns, humidity as a dotted line.
5-day forecast table
Every 3 hours, broken out across temperature, snow, rain, humidity, and wind. Each cell is colour-coded relative to the column min/max.
| Time | Condition | Temp (°F) | Snow (in) | Rain (in) | Humidity (%) | Wind (mps) | Wind dir |
|---|---|---|---|---|---|---|---|
| Loading detailed forecast… | |||||||
15-day temperature & precipitation
Daily temperatures, snow, and rain projected over the next two weeks.
Nearby streamflow gauges
USGS streamgauges around Groveville -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| West Branch Croton River At Richardsville Ny | 2 cfs | → |
| Wappinger Creek Near Wappingers Falls Ny | 30 cfs | → |
| W Br Croton River Below Dam Near Kent Cliffs Ny | 9 cfs | → |
| Horse Pound Brook Near Lake Carmel Ny | 1 cfs | → |
| West Branch Croton River Near Carmel Ny | 10 cfs | → |
| Muscoot River At Baldwin Place Ny | 11 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Groveville .
Boat launches
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Campgrounds
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Fishing spots
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River runs
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About Groveville
Where does the data for Groveville come from?
Structural and regulatory data come from the U.S. Army Corps of Engineers' National Inventory of Dams (NID). Weather forecast comes from NOAA / yr.no -- the same feed Snoflo's iOS app uses.
How often is the report updated?
NID structural data refreshes annually as the Corps publishes updated assessments. The weather forecast refreshes throughout the day.
What does the High hazard rating mean?
The Corps of Engineers' hazard potential classification grades probable consequences if the dam fails: High = probable loss of human life; Significant = no probable loss of human life but possible economic loss / environmental damage; Low = no probable loss of human life, only minor economic / environmental losses. See the Dam Data Reference card below for the full definitions.
What's "% of normal"?
The current storage value compared to the historical average storage on this calendar day. 100% = right on average; values above 100% mean above-normal storage (wet year); values below mean below-normal (dry year or drought).
Can I get alerts when storage crosses a threshold?
Yes -- alerts are managed in the Snoflo iOS app. Favorite this dam, set a threshold, and you'll get a push the moment conditions cross.
Dam data reference
Condition Assessment
- Satisfactory
- No existing or potential dam safety deficiencies are recognized. Acceptable performance is expected under all loading conditions (static, hydrologic, seismic) in accordance with the minimum applicable state or federal regulatory criteria or tolerable risk guidelines.
- Fair
- No existing dam safety deficiencies are recognized for normal operating conditions. Rare or extreme hydrologic and/or seismic events may result in a dam safety deficiency. Risk may be in the range to take further action.
- Poor
- A dam safety deficiency is recognized for normal operating conditions which may realistically occur. Remedial action is necessary. POOR may also be used when uncertainties exist as to critical analysis parameters which identify a potential dam safety deficiency.
- Unsatisfactory
- A dam safety deficiency is recognized that requires immediate or emergency remedial action for problem resolution.
- Not Rated
- The dam has not been inspected, is not under state or federal jurisdiction, or has been inspected but, for whatever reason, has not been rated.
Hazard Potential Classification
- High
- Dams assigned the high hazard potential classification are those where failure or mis-operation will probably cause loss of human life.
- Significant
- Dams assigned the significant hazard potential classification are those dams where failure or mis-operation results in no probable loss of human life but can cause economic loss, environmental damage, disruption of lifeline facilities, or impact other concerns. Significant hazard potential classification dams are often located in predominantly rural or agricultural areas but could be in areas with population and significant infrastructure.
- Low
- Dams assigned the low hazard potential classification are those where failure or mis-operation results in no probable loss of human life and low economic and/or environmental losses. Losses are principally limited to the owner's property.
- Undetermined
- Dams for which a downstream hazard potential has not been designated or is not provided.