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County staff present $241,000 Spring Creek watershed study proposal; committee weighs including tributaries
Summary
Staff briefed the Planning & Zoning Committee on a proposed Phase 2 Spring Creek Watershed study with a base cost of $241,000 for the main stem; staff recommended excluding upper reaches around Young Road to reduce cost while considering selective tributaries known to flood.
Wilson County planning staff presented a scope-of-work and map for a Phase 2 Spring Creek Watershed study at the committee meeting, describing a base cost of $241,000 to re-study the main stem for FEMA regulatory mapping. Staff asked the committee which tributaries, if any, should be added to the study area.
The presented scope uses a map that highlights the main stem (dark blue) and tributary candidates (light blue). Staff said the current FEMA study scope is the stretch from the rink to Young Road; the county can request additional tributaries for study but each addition carries time and cost.
Staff suggested removing upstream areas above Young Road from the scope to reduce cost while adding tributaries downstream that have recorded flooding. The staff presentation identified named tributaries that staff asked the committee to consider including: Dedmon Branch; an unnamed tributary on Lindsey Grove; Black Branch (crossing Sparta Pike); two tributaries under Bluebird Road; Link Branch (under Hartsville Pike); Wilbourne Branch (parallel to Hunters Point Pike); and Grama Branch. The staff noted that cost is not linear with stream miles and depends on tributary complexity and the modeling work required.
Committee members emphasized three reasons for the study: reducing the county's liability by identifying critical lots, providing modeling data that emergency management can use for threat/warning/response planning, and informing road/bridge design (capacity for future flow). One commissioner asked staff to gather historical data for the tributaries and to provide approximate bridge/road replacement cost guidance if required by the study’s results.
No formal vote was recorded to commit to the full $241,000 scope at the meeting. Staff said they would return with recommendations about which tributaries to include and with more detailed cost implications; the committee left the matter under consideration.
