North Carolina dam safety

Dams in Caswell County, North Carolina

By Michael Flynn, PE · water resources & dam safety engineer

Caswell County has 31 dams in the National Inventory of Dams, of which 5 are classified high hazard (Class C) and 1 intermediate hazard (Class B). Inventory, hazard classification, condition ratings and emergency action plan status, with the North Carolina requirements that apply to each.

Caswell County dam inventory — NID extract 2026-8-28
MeasureCount
Total dams31
Class C — high hazard5
Class B — intermediate hazard1
Class A — low hazard25
EAP required by statute (Class B + C)6
— with no EAP recorded5
Rated Poor1
Rated Unsatisfactory0
Median year completed1969
Oldest dam on record1939

What this means for owners in Caswell County

Of the 31 dams on record, 6 carry a statutory emergency action plan obligation under G.S. 143-215.31(a1) because they are classified Class B or Class C. 5 of those have no plan recorded in the national inventory — a 83% gap. Ownership across the county is 27 private, 2 state, 2 local government.

On condition, Caswell County has 1 rated Poor and 0 rated Unsatisfactory. A Poor or Unsatisfactory rating is a dam-safety finding, not a maintenance note: it means identified deficiencies that could lead to failure under the loading the dam is expected to withstand. Median completion year of 1969 puts the typical dam in the county at roughly 57 years old.

Requirements that apply

Hazard Classification
Screen a dam against the A / B / C criteria
Dam Breach Peak Discharge
Failure hydrograph for inundation mapping
Inflow Design Flood
Spillway design storm by hazard class

Data source. Dam counts, hazard classifications, condition ratings and EAP status are computed directly from the U.S. Army Corps of Engineers National Inventory of Dams national extract, stamped 2026-8-28. NID reflects what state and federal programs have reported to USACE; it can lag a state program's own records, and an "EAP Prepared: No" flag means no plan is recorded in NID rather than proof that no plan exists. Figures here are computed from the raw extract, not quoted from secondary reporting.

Scope. This page is general information about North Carolina dam safety regulation, current as of 2026-08-28. It is not an engineering opinion about any specific structure and it is not legal advice. Requirements change when the General Assembly amends the Dam Safety Law or the Environmental Management Commission amends the rules — always confirm against the current text of the statute and 15A NCAC 02K, and contact the NCDEQ Dam Safety Program for a determination that binds.

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