Dam Report

Williams-Johnson Pond Dam dam

North Carolina, USA Crabtree Creek-Tr Hazard High
Today high
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Tonight low
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Dam height
25ft
Hazard rating
High
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Williams-Johnson Pond Dam -- None dam
Williams-Johnson Pond Dam None · Crabtree Creek-Tr
About this dam

Williams-Johnson Pond Dam

Williams-Johnson Pond Dam, located in Raleigh, North Carolina, is a privately owned structure regulated by the North Carolina Department of Environmental Quality's Dam Safety Program. The dam, which has a hydraulic height of 23.5 feet and a structural height of 25 feet, serves primarily for recreational purposes along the Crabtree Creek-Tr river. With a storage capacity of 44 acre-feet and a normal storage level of 38 acre-feet, the dam provides essential water resources for the surrounding area.

Despite its fair condition assessment and high hazard potential, Williams-Johnson Pond Dam has been inspected regularly, with the last assessment conducted in December 2020. The dam meets state regulatory standards for inspection, permitting, and enforcement. As a significant feature of the local landscape, the dam plays a crucial role in managing water resources and enhancing recreational opportunities for residents and visitors alike. With its earth structure and strategic location, Williams-Johnson Pond Dam stands as a notable example of sustainable water resource management in North Carolina.

As climate change continues to impact water availability and quality, the maintenance and upkeep of dams like Williams-Johnson Pond Dam become increasingly important. By adhering to state regulations and conducting regular inspections, the owners of the dam contribute to the overall resilience of the region's water infrastructure. As enthusiasts of water resources and climate adaptation, it is essential to monitor and support the effective management of structures like Williams-Johnson Pond Dam to ensure the safety and sustainability of our water systems for future generations.

StateNone
River / streamCrabtree Creek-Tr
NID IDNC04537
Owner typePrivate
Primary purposeRecreation
Dam typeEarth
Max storage44 AF
Normal storage38 AF
Hazard potentialHigh
ConditionFair
Last inspectionTue, 15 Dec 2020 00:00:00 GMT

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.
Detailed forecast

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.

Hourly detail

Next 5 days, hour by hour

Temperature line with weather symbols on top, snow + rain accumulation as columns, humidity as a dotted line.

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Deep dive

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.

TimeConditionTemp (°F)Snow (in)Rain (in)Humidity (%)Wind (mps)Wind dir
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Long-term outlook

15-day temperature & precipitation

Daily temperatures, snow, and rain projected over the next two weeks.

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Regional inflow

Nearby streamflow gauges

USGS streamgauges around Williams-Johnson Pond Dam -- inflows here typically show up in storage 24-72 hours later.

Track Williams-Johnson 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.

FAQ

About Williams-Johnson Pond Dam

Where does the data for Williams-Johnson 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 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.