Harrison Lake State Park Campground
Harrison Lake State Park · Ohio · 130 sites
Imagery: USGS The National Map
Overview
Harrison Lake State Park Campground is an Ohio state park campground with 130 sites in 2 loops. Very shady: nearly every site is under trees. Verizon and AT&T report coverage at every site; T-Mobile reports none.
111 of 130 sites shaded
5 of 130 sites in full sun
23 of 130 sites with clear sky
Map of the campground
Every site from Ohio DNR’s own campsite map. Choose a layer to see it across the campground; tap a site to open it in Roam.
Layers
More in Roam Premium
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Questions
Which sites at Harrison Lake State Park Campground are the shadiest?
Nearly all of them. 111 of 130 sites at Harrison Lake State Park Campground have good shade from the trees, including from the hot afternoon sun.
See the tree canopy in RoamWhich sites at Harrison Lake State Park Campground get the most sun?
Only a few. 5 of 130 sites are truly sunny and 18 more get some sun; the rest are shaded.
See the tree canopy in RoamWill Starlink work at Harrison Lake State Park Campground?
Only at a few. About 23 of 130 sites have a clear gap in the trees for Starlink and 33 a partial one; most sit under tall trees. Satellite texting on a phone needs less open sky, but still works best from the most open spot you can find. This is our estimate from tree heights — check with the Starlink app's obstruction check when you arrive.
See the tree canopy in RoamWhich sites at Harrison Lake State Park Campground are the most level?
61 of 130 sites are flat, and 52 more have a gentle slope most RVs can level with blocks; 17 are steeper, better for tents.
See the slope at each site in RoamDoes Harrison Lake State Park Campground have cell service?
Mostly. Verizon and AT&T report coverage at every site; T-Mobile reports none. That's the coverage each carrier reports to the FCC, not a measured signal, so under trees or below a ridge it can be weaker.
See the coverage map in RoamWhat’s the weather like at Harrison Lake State Park Campground in October?
In October, expect highs around 63°F and lows around 42°F, with about 2.7 inches of rain over the month. Every month’s averages are in Roam Premium.
Open Harrison Lake State Park in RoamCampground facts
- Sites
- 130 in 2 loops
- Hookups
- 120 with electric
- Elevation
- 781–792 ft
- Managed by
- Ohio Department of Natural Resources
How we know Sources and limits
Shade, sun and Starlink are our estimates from Meta and the World Resources Institute’s canopy-height model (about 2 m pixels, from satellite imagery calibrated with space lidar; CC BY 4.0). From 2 m above each site we trace 72 lines out to 60 m and note the tallest tree in each direction. Shade counts trees overhead, the canopy within 30 m and how much of the afternoon sky is blocked. Sun counts how open the southern sky is. Starlink needs open sky above 35°, with the northern half counted twice because US dishes tilt north, and we keep the best spot within 8 m of the site’s post. The model sees tree heights only, not trunks, buildings or hills, so check with the Starlink app when you arrive.
Slope is the ground at each site’s post over about 4 m, from USGS 3DEP 1 m lidar: level under 2%, gentle to 4% (most rigs level on blocks), sloped to 8% (fine for a tent), steep beyond.
Cell coverage is from the FCC Broadband Data Collection (carrier filings as downloaded May 2026): each site is tested against each carrier’s modelled outdoor 4G/5G coverage. It is what the carriers report, not a measured signal.
Weather is NOAA’s 1991–2020 climate normals for the campground. Sites — where each one is, its number and its type — are from the agency’s own campsite GIS feed: Ohio DNR’s state park camping-units map (as of August 2026); the park is placed with the USGS Protected Areas Database (PAD-US) and named as the agency names it. Map imagery: USGS The National Map.
Page data as of October 15, 2026. Full source notes are in each layer’s info in the app.