Dam Report

Clemson Lower Diversion Dam - Saddle Dike dam

South Carolina, USA Seneca Hazard High
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Tonight low
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Dam height
30ft
Hazard rating
High
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Clemson Lower Diversion Dam - Saddle Dike -- None dam
Clemson Lower Diversion Dam - Saddle Dike None · Seneca
About this dam

Clemson Lower Diversion Dam - Saddle Dike

The Clemson Lower Diversion Dam - Saddle Dike is a critical component of flood risk reduction efforts along the Seneca River in South Carolina. Constructed in 1961 by the US Army Corps of Engineers, this earth dam plays a vital role in preventing Lake Hartwell from flooding the lower elevations of Clemson University. The dam features subsurface concrete cutoff walls and seismic shear walls to mitigate seepage issues and provide stabilization during potential earthquakes. While the Upper and Lower Diversion Dams have a low risk of failure, the Saddle Dike is considered to have a moderate risk due to the potential for seepage-induced erosion of foundation soils.

USACE is actively managing the risk associated with the Saddle Dike by continuously updating the Emergency Action Plan, conducting emergency exercises, and performing regular inspections and maintenance. The pumping station, part of the flood control system, has a small flood risk during heavy rain events that exceed its capacity. Although flooding in low-lying areas of Clemson University may occur, the slow filling nature of the inundation provides time for safe evacuation. USACE collaborates closely with local and state emergency managers and Clemson University personnel to ensure effective risk management measures are in place to protect the campus and surrounding areas.

Overall, the Clemson Lower Diversion Dam - Saddle Dike is a key infrastructure ensuring flood resilience for the region. Through proactive risk management practices and collaboration with stakeholders, USACE is working to safeguard the dam and surrounding areas from potential flooding incidents, highlighting the importance of ongoing monitoring and maintenance to ensure the safety and security of the community.

StateNone
River / streamSeneca
NID IDSC02754
Owner typeFederal
Primary purposeFlood Risk Reduction
Dam typeEarth
Year built1961
Dam height30 ft
Max storage3,438,700 AF
Normal storage2,550,000 AF
Drainage area2,088.0 sq mi
Hazard potentialHigh
ConditionNot Available
Last inspectionFri, 28 Apr 2017 00:00:00 GMT
EAP preparedYes

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 Clemson Lower Diversion Dam - Saddle Dike -- inflows here typically show up in storage 24-72 hours later.

Track Clemson Lower Diversion Dam - Saddle Dike 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 Clemson Lower Diversion Dam - Saddle Dike

Where does the data for Clemson Lower Diversion Dam - Saddle Dike 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.

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