William Parsons Wildlife Marsh Dam dam
William Parsons Wildlife Marsh Dam
William Parsons Wildlife Marsh Dam, located in Mayweed Corner, New York, is a privately owned structure regulated by the New York State Department of Environmental Conservation. Constructed in 1964, this earth dam stands at a height of 10 feet and spans a length of 750 feet, with a maximum storage capacity of 86 acre-feet. The dam serves a primary purpose classified as "Other" and is associated with the Mud Creek water system.
Despite its low hazard potential, the dam has a moderate risk rating and has not been inspected since September 1969. The condition assessment is currently listed as "Not Rated," indicating a need for updated evaluations. The spillway type is uncontrolled, with a width of 30 feet, and the drainage area is approximately 0.79 square miles. In the event of an emergency, the dam lacks an Emergency Action Plan (EAP) and updated contact information, highlighting potential areas for improvement in risk management and safety measures.
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 William Parsons Wildlife Marsh Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Honeoye Creek At Honeoye Falls Ny | 423 cfs | → |
| Canandaigua Outlet At Chapin Ny | 209 cfs | → |
| Irondequoit Cr At Railroad Mills | 77 cfs | → |
| Conesus Creek Near Lakeville | 55 cfs | → |
| Genesee River At Avon Ny | 3,440 cfs | → |
| Erie (Barge) Canal At Lock 30 | 232 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near William Parsons Wildlife Marsh Dam.
Boat launches
- Canadice Lake Road 6196, Canadice
- Livonia
- West River
- Mendon Ponds Boat Launch
- Conesus Inlet
- Erie Canal Boat Launch
Track William Parsons Wildlife 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 William Parsons Wildlife Marsh Dam
Where does the data for William Parsons Wildlife 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 William Parsons Wildlife Marsh Dam.