Big Stone Lake State Park - Bonanza Area
Park
201 acres1.2 mi of trail
Big Stone Lake State Park Hiking Club Trail
Dog rules not recorded
No trailhead mapped yetWebsite ↗
–Not graded
Outdoors in Foster Township
Few parks or trails are on the map in Foster Township
The biggest trail networks: Big Stone Lake State Park - Bonanza Area (1.2 mi). 2% of Foster Township’s land is conserved, about 399 acres. 285 acres are parks and preserves, 2,190 per 1,000 residents.
Conserved land
2%
399 acres · of 30.1 sq mi of land
Trails
6.0 mi
0.2 per sq mi of land
Park land
285 ac
2,190 acres per 1,000 residents
Near a park
17%
of residents within ½ mile
Lakes & rivers
1
1 boat launch
The map
Conserved land, trails & bike routes
Tap a number to zoom to a park. Tap a layer to hide it.
Easements protect land from building but are usually private.© OpenStreetMap contributors · USGS PAD-US
Places to walk
Pick a walk
The longest trail network is Big Stone Lake State Park - Bonanza Area, with 1.2 miles. Directions go to the nearest trailhead or public parking.
Big Stone Lake State Park - Overlook Area
Park
77 acres
Dog rules not recorded
No trailhead mapped yetWebsite ↗
Who protects it
399 conserved acres
2% of Foster Township’s land. Water is left out: Foster Township has 30.1 square miles of land and 3.1 of water, so the share counts land only. Who manages Foster Township’s conserved land, from the USGS Protected Areas Database. Approximate, because parcels can overlap.
State parks186 ac
U.S. Fish and Wildlife Service177 ac
Other state land86 ac
State Park · 186 acConservation Easement · 163 acResource Management Area · 100 ac
Good to know
Conserved doesn’t always mean open to visitors. 163 acres are conservation easements, usually private land. The walks above are places people visit.
The biggest protected parcels
| Parcel (PAD-US) | Managed by | Acres | Public access |
|---|---|---|---|
| Big Stone Lake State Park State Park | State parks | 186 | Open |
| Big Stone County Waterfowl Production Area Resource Management Area | U.S. Fish and Wildlife Service | 100 | Restricted |
Things to do
2 places to go in Foster Township
Beaches, playgrounds, peaks, falls and more. Pick a kind.
Boat launches in Foster Township
1 boat launch without a name on the map. Tap “Show all on map” to see it.
Campgrounds in Foster Township
Big Stone Lake State Park CampgroundFee · In Big Stone Lake State Park - Overlook Area
DirectionsTrails & water
1 named trail and 1 lakes & rivers
Named trails
Unpaved · 4.2 mi
Big Stone Lake State Park Hiking Club Trail1.2 mi
Lakes & rivers tap for directions
When to get out
September is the best month for walking in Foster Township
NOAA’s 1991–2020 normals for the town and the daylight at its latitude. Outlined months have long days, highs of 59 to 86 °F and little rain for the place.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight (h) | 9.1 | 10.3 | 11.8 | 13.5 | 14.9 | 15.7 | 15.3 | 14.1 | 12.5 | 10.8 | 9.4 | 8.7 |
| High (°F) | 21 | 26 | 39 | 55 | 69 | 78 | 83 | 81 | 73 | 58 | 41 | 27 |
| Rain (in) | 0.6 | 0.7 | 1.1 | 2.3 | 3.0 | 3.8 | 3.9 | 2.8 | 2.5 | 2.4 | 0.9 | 0.7 |
January is the driest month (0.6 in) and July the warmest (highs of 83 °F). 3.9 inches fall in July, the wettest month. The climate in Foster Township →
Next door
Foster Township and its neighbors
Foster Township has the most mapped trails of the 5 towns around it. Tap a town to see its outdoors.
Foster Township6.0 miBrowns Valley Township5.3 miPrior Township5.3 miGeneseo Township3.8 miLake Township0.4 mi
| Town | Conserved of land | Trail mi per sq mi | Park acres per 1,000 | Near a park ½ mile | Outdoors |
|---|---|---|---|---|---|
| Foster Township | — not graded: under 1,000 residents or part of its town | ||||
| Browns Valley Township | — not graded: under 1,000 residents or part of its town | ||||
| Prior Township | — not graded: under 1,000 residents or part of its town | ||||
The four inputs of the Outdoors grade, from the engine; shares are of land, not water.
Questions about parks and trails in Foster Township
Where can I hike in Foster Township?
The longest trail networks: Big Stone Lake State Park - Bonanza Area, 1.2 miles. Each one is on the map above, with directions to the nearest trailhead or parking.
Are dogs allowed on Foster Township’s trails?
Big Stone Lake State Park - Bonanza Area and Big Stone Lake State Park - Overlook Area don’t have dog rules recorded on the map; check the signs at the trailhead.
Is there public land near Foster Township?
1,881 acres of parks and open public land lie inside Foster Township or within 10 miles of it (PAD-US), 285 of them inside the town line.
Trail talk
Conditions, parking and favorite walks from Foster Township neighbors.
Share a tip
Sources
Where this page comes from
Conserved and public land: USGS Protected Areas Database of the United States (PAD-US), service updated July 2026. Parks, trails, playgrounds, beaches and other places: OpenStreetMap (© OpenStreetMap contributors, ODbL), map data as of 2026-10-28. Land and water area: Census 2025 Gazetteer. Residents near a park: 2020 Census blocks. National Register: National Park Service. How TownRatings grades the outdoors →