Pat Harrison Waterway District Spillway Road
Depression-era spillways and forgotten flood control roads
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.
Trail Specs
| Difficulty | Moderate |
|---|---|
| Trail Type | Backcountry |
| Surface | Gravel |
| Features | Camping, Historic, Remote, Water Crossings |
| Length (miles) | 18 mi / 29 km |
| Duration | 1-2 days |
| Max elevation (ft) | 420 ft |
| Best season | October-May |
| Minimum vehicle | High clearance 4WD |
| Nearest town | Hattiesburg, Mississippi |
| Land manager | Pat Harrison Waterway District |
| Permit required | No |
| Cell service | Spotty |
| Water crossings | Yes |
| Dispersed camping | Yes |
| Start coordinates | |
| End coordinates | |
| Copy both for Google Maps directionsClick to copy the directions URL · or open it directly in a new tab | |
| Find on Google | Search on Google → |
Location
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