White Hollow Dam dam
White Hollow Dam
White Hollow Dam, located in Watkins Glen, New York, is a state-regulated structure designed for flood risk reduction along Glen Creek. Completed in 1936, this arch-type dam stands at a height of 34 feet and stretches 122 feet in length, with a storage capacity of 160 acre-feet. The dam's primary purpose is flood risk reduction, although it also serves recreational purposes for the local community.
With a significant hazard potential and a moderate risk assessment rating, White Hollow Dam undergoes inspections every four years to ensure its structural integrity and safety. The dam features an uncontrolled spillway with a width of 89 feet, allowing for the controlled release of excess water during periods of high flow. Despite not being officially rated for its condition, the dam continues to play a crucial role in managing flood risks in the area, highlighting the importance of effective water resource management in the face of changing climate conditions.
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 White Hollow Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Chemung River At Corning Ny | 142 cfs | → |
| Cohocton River Near Campbell Ny | 1,010 cfs | → |
| Chemung River At Elmira Ny | 3,540 cfs | → |
| Tioga River Near Erwins Ny | 2,020 cfs | → |
| Keuka Lake Outlet At Dresden Ny | 547 cfs | → |
| Fall Creek Near Ithaca Ny | 268 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near White Hollow Dam.
Boat launches
- Ny 414 Watkins Glen
- Cayuta Lake Boat Launch
- Lamoka Lake
- Pipe Pk Road Schuyler County
- Seneca Lake Boat Launch
- Lodi Point State Marine Park
Campgrounds
- Watkins Glen State Park
- Watkins Glen Family Camping
- Ebeneezer's Crossing Primitive Tent Site
- Clute Memorial Park
- Montour Marina
- Havana Glen
Paddle runs
Track White Hollow 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 White Hollow Dam
Where does the data for White Hollow 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 Significant 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 White Hollow Dam.