E.M. Johnson Detention Basin dam
E.M. Johnson Detention Basin
E.M. Johnson Detention Basin is a state-regulated water resource located in Wake, North Carolina, specifically in the city of Raleigh. The basin serves as a vital component in managing stormwater runoff from an unnamed tributary, with the primary purpose being categorized as 'Other.' The facility is overseen by the North Carolina Department of Environmental Quality's Dam Safety Program, ensuring compliance with state regulations for permitting, inspection, and enforcement.
Despite lacking specific details on dam height, volume, or storage capacity, the basin is deemed to have a significant hazard potential, highlighting its crucial role in flood control and water management within the region. Although the condition assessment is listed as 'Not Rated,' the facility undergoes regular inspections every two years to address any potential risks or issues that may arise. E.M. Johnson Detention Basin stands as a key infrastructure in safeguarding the surrounding area from flood events and ensuring the sustainable management of water resources in Wake County.
As water resource and climate enthusiasts, the E.M. Johnson Detention Basin offers valuable insight into the intricate network of infrastructure dedicated to managing stormwater and protecting communities from potential flooding. With its state-regulated status and oversight by the North Carolina Department of Environmental Quality, the basin plays a critical role in ensuring the safety and resilience of the region's water resources. Despite the lack of specific structural details, the facility's significant hazard potential underscores its importance in mitigating flood risks and maintaining the integrity of the local watershed. By understanding and appreciating the role of facilities like E.M. Johnson Detention Basin, we can better appreciate the complex interplay between water management, climate resilience, and community safety.
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 E.M. Johnson Detention Basin -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Neuse River Near Falls | 123 cfs | → |
| Crabtree Creek At Hwy 70 At Raleigh | 13 cfs | → |
| Marsh C Nr New Hope | 1 cfs | → |
| Crabtree Creek At Us 1 At Raleigh | 17 cfs | → |
| Crabtree Cr At Ebenezer Church Rd Nr Raleigh | 14 cfs | → |
| Rocky Branch Below Pullen Drive At Raleigh | 0 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near E.M. Johnson Detention Basin.
Boat launches
- Barton's Creek Boat Ramp
- Neuse River Trail Raleigh
- Falls Lake Trail Wake County
- Durham County
- Creedmoor Road 13900, Town Of Wake Forest
- Milburnie Dam Bridge Raleigh
Campgrounds
- Durant Nature Park
- Blue Heron Campground
- Osprey Nest Campground
- Bootleg Point Campground
- Shoreline Campground
- Shortleaf Pine Campground
Track E.M. Johnson Detention Basin 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 E.M. Johnson Detention Basin
Where does the data for E.M. Johnson Detention Basin 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 Significant 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 E.M. Johnson Detention Basin.