Collins Marsh Sub-Impound. dam
Collins Marsh Sub-Impound.
Located in Manitowoc, Wisconsin, the Collins Marsh Sub-Impound is a state-owned recreational water resource that was completed in 1988. This sub-impound is part of the larger Collins Marsh Wildlife Area and is situated along the tributary of Mud Creek. With a dam height of 8 feet and a total length of 7500 feet, the sub-impound has a storage capacity of 350 acre-feet and covers a surface area of 140 acres, providing ample space for outdoor activities and wildlife habitat.
Managed by the Wisconsin Department of Natural Resources (WIDNR), the Collins Marsh Sub-Impound is regulated, inspected, and permitted by the state agency to ensure its safety and functionality. The spillway type for this earth dam is uncontrolled, with a spillway width of 7503 feet, allowing for controlled discharge during periods of high water flow. The hazard potential for this sub-impound is rated as low, with a moderate risk assessment score of 3, indicating a relatively stable and secure water resource for recreational use.
Visitors to the Collins Marsh Sub-Impound can enjoy activities such as fishing, boating, and wildlife observation in a serene and natural setting. With its strategic location and well-maintained infrastructure, this water resource serves as a valuable asset for the community and a sanctuary for various plant and animal species. Whether seeking relaxation or adventure, the Collins Marsh Sub-Impound offers a unique and enriching experience for water resource and climate enthusiasts alike.
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 Collins Marsh Sub-Impound. -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Manitowoc River At Manitowoc | 239 cfs | → |
| East River At Ct Highway Zz Near Greenleaf | 8 cfs | → |
| Otter Creek At Willow Road Near Plymouth | 31 cfs | → |
| Fox River At Appleton | 8,310 cfs | → |
| Sheboygan River At Sheboygan | 360 cfs | → |
| Fox River At Oil Tank Depot At Green Bay | 3,570 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Collins Marsh Sub-Impound..
Boat launches
- Collins Marsh / Mud Creek Carry-In
- Bull Head Lake -- Access At End Of Bullhead Lake Ln
- Long Lake -- Access Nr Long Lake Rd
- Becker Lake -- Access
- Round Lake -- Access At Ne Part Of Lake Nr Round Lake Rd
- Pigeon Lake - Access At End Of Autumn Ridge Dr
Track Collins Marsh Sub-Impound. 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 Collins Marsh Sub-Impound.
Where does the data for Collins Marsh Sub-Impound. 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 Collins Marsh Sub-Impound..