Summit Lake Dam dam
Summit Lake Dam
Summit Lake Dam, located in Orange County, New York, was completed in 1873 and is owned and regulated by the New York State Department of Environmental Conservation (NYS DEC). This Earth dam stands at a height of 13 feet and has a length of 145 feet, providing a storage capacity of 340 acre-feet for recreational purposes. The dam is situated on TR-POPOLOPEN BROOK and has a spillway width of 6 feet, categorized as uncontrolled with a low hazard potential.
Despite its age, Summit Lake Dam has a moderate risk assessment score of 3, indicating that certain risk management measures may need to be implemented. The dam's condition assessment is currently marked as "Not Rated," with the last inspection conducted in 1975. While the dam has not been modified in recent years, it is encouraging to note that the state agency responsible for its oversight conducts regular inspections, permitting, and enforcement activities to ensure the safety and functionality of the structure. Water resource and climate enthusiasts may find Summit Lake Dam an intriguing subject of study due to its historical significance and ongoing management efforts.
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.
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 Summit Lake Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Mahwah River Near Suffern Ny | 7 cfs | → |
| Ramapo River At Ramapo Ny | 60 cfs | → |
| Croton R @ New Croton Dam Nr Croton-On-Hudson Ny | 272 cfs | → |
| Ramapo River At Suffern Ny | 40 cfs | → |
| Ramapo River Near Mahwah Nj | 67 cfs | → |
| Ringwood Creek Near Wanaque Nj | 8 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Summit Lake Dam.
Boat launches
- Battlefield Road Town Of Stony Point
- Bear Mountain Bridge Road Cortlandt
- Broadway Buchanan
- Hudson Avenue Peekskill
- Cortlandt Street Cortlandt
- Laurel Meadow Drive Town Of Warwick
Campgrounds
- Round Pond Military
- Beaver Pond Campsite
- Beaver Pond - Harriman State Park
- Blue Mountain Reservation
- Camping For Hikers On Ballfield Graymoor Center
- Croton Point Park
Fishing spots
Paddle runs
- Kent Bridge To Boardman Bridge
- Pond Downstream Of Shepaug Reservoir Dam, Marked By Service Road Bridge To Ends In Backwaters Of Lake Lillinonah, Near Roxbury Falls
- Begins Downstream Of The Borough Of Bantam, At Stoddard Road Bridge To The Confluence With The Shepaug River
Track Summit Lake Dam in the Snoflo app
Save this dam as a favorite and get the local NOAA / yr.no forecast plus regional flow context wherever you are.
About Summit Lake Dam
Where does the data for Summit Lake Dam 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 Low 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 above 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.
Other water bodies near here
Snoflo-tracked reservoirs and dams within driving distance of Summit Lake Dam.