Mount Morris dam
Mount Morris
Mount Morris, located in Waushara County, Wisconsin, is a gravity dam constructed in 1938 on the Rattlesnake Creek for recreational purposes. The dam stands at a height of 20 feet with a hydraulic height of 16 feet and a length of 100 feet, providing a storage capacity of 1050 acre-feet. With a surface area of 163 acres and a drainage area of 8 square miles, Mount Morris serves as a vital water resource for the region.
Managed by the Wisconsin Department of Natural Resources, Mount Morris is regulated, permitted, inspected, and enforced by state agencies to ensure its safety and functionality. Despite its low hazard potential and moderate risk assessment, the dam's condition is currently not rated. The emergency action plan for Mount Morris was last revised in 1995, indicating the need for updated emergency preparedness measures in case of any unforeseen events.
With its picturesque location and importance for recreation, Mount Morris offers a valuable water resource for the community while also highlighting the need for continued monitoring and maintenance to ensure its long-term sustainability and safety 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 Mount Morris -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Fox River At Berlin | 1,570 cfs | → |
| Waupaca River Near Waupaca | 431 cfs | → |
| Fox River At Princeton | 1,120 cfs | → |
| Puchyan River Ds N. Lawson Drive Nr Green Lake | 115 cfs | → |
| Green Lake Inlet At Ct Highwy A Near Green Lake | 67 cfs | → |
| White Creek @ Spring Grove Road Nr Green Lake | 6 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Mount Morris.
Boat launches
- Morris Lake Launch And Beach
- Lake Morris -- 20th Drive Boat Ramp
- Porters Lake -- Access
- Johns Lake -- Access
- Hills Lake -- Access
- Lake Napowan -- Access
Campgrounds
- Napowan Adventure Base
- Badger
- Hartman Creek State Park Campground
- Camp Onaway
- Vista Royalle Campground
- Crooked River Campground
More reservoirs
Track Mount Morris 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 Mount Morris
Where does the data for Mount Morris 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 Mount Morris.