Mississippi · USA

Pat Harrison Waterway District Spillway Road

Depression-era spillways and forgotten flood control roads

Moderate

The concrete spillway structures of the Pat Harrison Waterway District tell the story of 1930s flood control engineering gone to seed, with maintenance roads threading between crumbling gates and overgrown channels. You’ll navigate through timber company roads that dead-end at forgotten spillways, cross multiple creek beds on concrete slabs, and climb sandy ridges where the CCC boys built fire towers that still stand. The route connects several spillway structures via gravel roads that require high clearance when water runs high through the bottoms.

This is moderate territory that demands attention during wet seasons when creek crossings can turn technical fast. Stock 4WD handles it fine in dry conditions, but you’ll want good tires and recovery gear when it’s muddy. Spring through fall offers the best access, though summer heat makes the mosquitoes brutal in the bottoms. No permits required, and dispersed camping is possible on the ridges. It’s a piece of Mississippi’s depression-era infrastructure slowly being reclaimed by the woods.

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Trail Specs

Difficulty
Trail Type
Surface
Features, , ,
Length (miles)18 mi / 29 km
Duration1-2 days
Max elevation (ft)420 ft
Best seasonOctober-May
Minimum vehicleHigh clearance 4WD
Nearest townHattiesburg, Mississippi
Land managerPat Harrison Waterway District
Permit requiredNo
Cell serviceSpotty
Water crossingsYes
Dispersed campingYes
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End coordinates
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Difficulty
Official: Moderate

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