Rock Manor Golf Course Dam dam
Rock Manor Golf Course Dam
Rock Manor Golf Course Dam, located in Wilmington, Delaware, is a gravity dam built in 2007 primarily for flood risk reduction along Matson Run. Standing at a height of 23.94 feet and stretching 475 feet in length, the dam has a storage capacity of 100 acre-feet and a maximum discharge capacity of 4522 cubic feet per second. Although the dam is classified as having a high hazard potential, its condition was assessed as fair in 2008, with a moderate risk level assigned.
Operated by the local government and regulated by the Delaware Department of Natural Resources and Environmental Control (DNREC), the Rock Manor Golf Course Dam plays a crucial role in mitigating flooding risks in the area. Despite its fair condition assessment, the dam continues to undergo regular inspections and enforcement measures to ensure its structural integrity and effectiveness in flood control. With its presence on Matson Run, the dam serves as a vital infrastructure piece contributing to water resource management and climate resilience efforts in New Castle County, Delaware.
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 Rock Manor Golf Course Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Shellpot Creek At Wilmington | 2 cfs | → |
| Brandywine Creek At Wilmington | 185 cfs | → |
| Red Clay Creek At Wooddale | 25 cfs | → |
| Red Clay Creek Near Stanton | 29 cfs | → |
| Brandywine Creek At Chadds Ford | 151 cfs | → |
| Red Clay Creek Near Kennett Square | 15 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Rock Manor Golf Course Dam.
Boat launches
- Crown Point Road Oldmans
- Plant Road Penns Grove
- Delaware Memorial Bridge Pennsville Township
- I 95;Us 202 Wilmington
- Hawks Bridge Road 740, Salem County
- Churchmans Road New Castle County
Campgrounds
- Tinicum Island Primitive Campsite
- Lums Pond Youth Camping
- Harmony Hill Wilderness Area Campsite
- Yogi Bear Tall Pines Campground
- Parvin State Park
- Sandy Hill Camp
Fishing spots
Track Rock Manor Golf Course 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 Rock Manor Golf Course Dam
Where does the data for Rock Manor Golf Course 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 High 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 Rock Manor Golf Course Dam.