I.C. Hammond Preserve
Nature preserve
28 acres
Dog rules not recorded
No trailhead mapped yet
Photo: David M. Green · CC BY-SA 3.0–Not graded
Outdoors in Onset
9% of Onset’s land is conserved, and virtually every resident lives within a half mile of a park
Virtually every resident lives within a half mile of a park. 9% of Onset’s land is conserved, about 63 acres. 58 acres are parks and preserves, 42 per 1,000 residents.
Conserved land
9%
63 acres · of 1.1 sq mi of land
Trails
0.3 mi
0.3 per sq mi of land
Park land
58 ac
42 acres per 1,000 residents
Near a park
99%+
of residents within ½ mile
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
Directions go to the nearest trailhead or public parking.
Wabun Park
Park
4 acres
Dog rules not recorded
No trailhead mapped yet
All 5 parks & preserves
I.C. Hammond Preserve28 acres
Wabun Park4 acres
Leonard C. Lopes Memorial Park3 acres
DirectionsProspect Park3 acres
DirectionsConservation Land1 acres
Who protects it
63 conserved acres
9% of Onset’s land. Water is left out: Onset has 1.1 square miles of land and 0.2 of water, so the share counts land only. Who manages Onset’s conserved land, from the USGS Protected Areas Database. Approximate, because parcels can overlap.
Town or city11 ac
Not recorded50 ac
Private Conservation · 32 acLocal Other or Unknown · 17 acLocal Park · 11 acResearch or Educational Area · 1 ac
The biggest protected parcels
| Parcel (PAD-US) | Managed by | Acres | Public access |
|---|---|---|---|
| I C Hammond Preserve Private Conservation | Not recorded | 29 | Open |
| Beaver Dam Wetlands Local Other or Unknown | Not recorded | 12 | Closed |
| Leonard C Lopes Playground Local Park | Town or city | 5 | Open |
| Great Neck Wildlife Sanctuary Private Conservation | Not recorded | 3 | Open |
| Prospect Park Local Park | Town or city | 3 | Open |
| Wabun Park Local Park | Town or city | 3 | Open |
| Onset Tennis Courts Local Other or Unknown | Not recorded | 2 | Open |
| Onset Beach Local Other or Unknown | Not recorded | 2 | Open |
| Town of Wareham Local Other or Unknown | Not recorded | 1 | Open |
| Onset School Playground Research or Educational Area | Not recorded | 1 | Open |
1 smaller protected places aren’t shown.
Things to do
10 places to go in Onset
Beaches, playgrounds, peaks, falls and more. Pick a kind.
Beaches in Onset
7 beaches without a name on the map. Tap “Show all on map” to see them.
Biking & sports
0.0 miles of bike routes
Bike lanes are often missing from the map in smaller towns, so that number is likely low.
Courts & fields
6Pickleball
3Basketball
1Baseball
1Tennis
Includes school and college facilities, which aren’t always open to the public.
When to get out
The best walking months in Onset: May to September
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) | 9.5 | 10.5 | 11.8 | 13.3 | 14.5 | 15.2 | 14.9 | 13.8 | 12.4 | 11.0 | 9.8 | 9.2 |
| High (°F) | 39 | 40 | 46 | 56 | 66 | 75 | 82 | 80 | 73 | 63 | 53 | 44 |
| Rain (in) | 4.1 | 3.6 | 5.3 | 4.4 | 3.6 | 3.8 | 3.1 | 3.7 | 4.1 | 5.1 | 4.4 | 4.9 |
July is the driest month (3.1 in) and the warmest (highs of 82 °F). 5.3 inches fall in March, the wettest month. The climate in Onset →
Questions about parks and trails in Onset
Are dogs allowed on Onset’s trails?
I.C. Hammond Preserve and Wabun Park don’t have dog rules recorded on the map; check the signs at the trailhead.
Is there public land near Onset?
37,883 acres of parks and open public land lie inside Onset or within 10 miles of it (PAD-US), 58 of them inside the town line.
Trail talk
Conditions, parking and favorite walks from Onset 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 →