Donnelly Pond Dam dam
Donnelly Pond Dam
Donnelly Pond Dam, located in Wrayville, Illinois, is a private earth dam completed in 1965 with a primary purpose of fire protection and serving as a stock or small fish pond. The dam stands at a height of 28 feet and has a length of 180 feet, with a storage capacity of 34 acre-feet. The dam is regulated by the Illinois Department of Natural Resources (IDNR) and is subject to state permitting, inspection, and enforcement.
Despite its low hazard potential, the dam poses a moderate risk, with a risk assessment rating of 3. The spillway type is uncontrolled, with a width of 49 feet. The last inspection of Donnelly Pond Dam took place in September 2015, with an inspection frequency of 5 years. The condition assessment of the dam is currently listed as "Not Available," highlighting the need for ongoing monitoring and maintenance to ensure its safety and integrity for continued use.
Water resource and climate enthusiasts interested in Donnelly Pond Dam can appreciate its role in providing fire protection and supporting local wildlife through its function as a small fish pond. The dam's presence along Coppens Creek contributes to the surrounding ecosystem and highlights the importance of proper dam management to mitigate risks and ensure the safety of the community. Ongoing efforts by the IDNR and other regulatory agencies are essential to safeguarding Donnelly Pond Dam and its surrounding environment for future generations.
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 Donnelly Pond Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Edwards River Near New Boston | 264 cfs | → |
| Duck Creek At 110th Ave At Davenport | 10 cfs | → |
| Cedar River Near Conesville | 6,160 cfs | → |
| Pope Creek Near Keithsburg | 76 cfs | → |
| Iowa River At Wapello | 10,200 cfs | → |
| Mill Creek At Milan | 28 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Donnelly Pond Dam.
Boat launches
- Muscatine County
- Public Boat Ramp Rock Island County
- 120th Street Louisa County
- 110th Avenue Buffalo
- F Avenue 9777, Louisa County
Track Donnelly Pond 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 Donnelly Pond Dam
Where does the data for Donnelly Pond 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 Donnelly Pond Dam.