Knowlesville Marsh Dam dam
Knowlesville Marsh Dam
Knowlesville Marsh Dam, located in Genesee, New York, is a Federal-owned structure managed by the U.S. Fish & Wildlife Service. Built in 1964, this Earth-type dam serves as a vital component of the area's Fish and Wildlife Pond, with a primary purpose of providing habitat for various species. The dam stands at 11 feet tall and spans a length of 940 feet, with a capacity to store 274 acre-feet of water for the conservation of the surrounding environment.
Managed and regulated by the New York State Department of Environmental Conservation, Knowlesville Marsh Dam has a controlled spillway to manage water flow, ensuring the safety and stability of the structure. Despite its fair condition assessment as of July 2019, the dam is classified as having low hazard potential with a very high risk assessment rating. Regular inspections are conducted every five years to monitor its structural integrity and ensure compliance with safety standards, emphasizing the importance of maintaining this critical water resource infrastructure.
As a key feature of the tributary to Oak Orchard Creek, Knowlesville Marsh Dam plays a crucial role in supporting the biodiversity and ecological health of the region. With its strategic design and management by the U.S. Fish & Wildlife Service, this dam stands as a testament to the collaborative efforts between federal and state agencies in promoting sustainable water resource management in New York.
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 Knowlesville Marsh Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Tonawanda Creek At Batavia Ny | 140 cfs | → |
| Tonawanda Creek At Rapids Ny | 350 cfs | → |
| Tonawanda Creek At Attica Ny | 92 cfs | → |
| Cayuga Creek Nr Lancaster Ny | 69 cfs | → |
| Black Creek At Churchville Ny | 178 cfs | → |
| Ellicott Creek Below Williamsville Ny | 142 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Knowlesville Marsh Dam.
Track Knowlesville Marsh 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 Knowlesville Marsh Dam
Where does the data for Knowlesville Marsh 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 Knowlesville Marsh Dam.