Photo: mangtronix · CC BY-SA 2.015% of Discovery Bay’s land is conserved: 532 acres
29 acres are parks and preserves, 1.9 per 1,000 residents. 0.3 miles of mapped trail cross Discovery Bay, 0.1 per square mile of land. 51% of residents live within a half mile of a park.
Ahead of 35% of U.S. towns · #655 of 847 in California. What drives it
What kind of outdoors town is Discovery Bay?
Read from the map. The page puts what stands out first.
How much outdoors does Discovery Bay have?
On conserved land, trails, park land and how close residents live to a park, Discovery Bay is ahead of 35% of U.S. towns, #655 of 847 in California. Conserved land holds the grade up; park acres per resident pull it down.
Water is 20% of Discovery Bay’s area (1 of 7 square miles), so every share here is of land; over land and water together, the conserved share would read 12%.
PAD-US, OpenStreetMap (© OpenStreetMap contributors), Census 2025 Gazetteer and 2020 blocks; details in Sources below. How TownRatings grades the outdoors →
Conserved land, trails & bike routes
Tap a number to zoom to a park. Tap a layer to hide it.
Pick a walk
The longest trail network is Cornell Park, with 0.2 miles. Directions go to the nearest trailhead or public parking.
532 conserved acres
15% of Discovery Bay’s land. Water is left out: Discovery Bay has 5.6 square miles of land and 1.4 of water, so the share counts land only. Who manages Discovery Bay’s conserved land, from the USGS Protected Areas Database. Approximate, because parcels can overlap.
Conserved doesn’t always mean open to visitors. 506 acres are conservation easements, usually private land. The walks above are places people visit.
| Parcel (PAD-US) | Managed by | Acres | Public access |
|---|---|---|---|
| Cornell Park Local Park | County | 13 | Open |
| Slifer Park Local Park | County | 7 | Open |
| Ravenswood Park Local Park | Other or Unknown Local Government | 6 | Open |
| Delta Access Regional Recreation Area Local Recreation Area | Regional agency | 3 | Closed |
13 places to go in Discovery Bay
Beaches, playgrounds, peaks, falls and more. Pick a kind.
8 playgrounds without a name on the map. Tap “Show all on map” to see them.
1 boat launch without a name on the map. Tap “Show all on map” to see it.
3 picnic areas without a name on the map.
3 lakes & rivers
5.5 miles of bike routes
Bike lanes are often missing from the map in smaller towns, so that number is likely low.
Includes school and college facilities, which aren’t always open to the public.
The best walking months in Discovery Bay: April and May
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) | 9.8 | 10.7 | 11.8 | 13.1 | 14.2 | 14.8 | 14.5 | 13.6 | 12.4 | 11.1 | 10.1 | 9.5 |
| High (°F) | 57 | 62 | 68 | 73 | 80 | 87 | 92 | 91 | 88 | 79 | 66 | 57 |
| Rain (in) | 2.7 | 2.4 | 1.8 | 0.9 | 0.5 | 0.1 | 0.0 | 0.0 | 0.1 | 0.6 | 1.3 | 2.4 |
July is the driest month (under 0.1 in) and the warmest (highs of 92 °F). 2.7 inches fall in January, the wettest month. Summer highs reach 92 °F, too hot for the outline. The climate in Discovery Bay →
Questions about parks and trails in Discovery Bay
Where can I hike in Discovery Bay?
The longest trail networks: Cornell Park, 0.2 miles. Each one is on the map above, with directions to the nearest trailhead or parking.
How much of Discovery Bay is conserved land?
15% of its land, against a typical 4% for a California town and 4% nationally (PAD-US). Conserved doesn’t always mean open to visitors: easements are usually private land.
Are dogs allowed on Discovery Bay’s trails?
Cornell Park and Slifer Park don’t have dog rules recorded on the map; check the signs at the trailhead.
Where can I bike in Discovery Bay?
5.5 miles of bike routes are on the map: 5.5 of painted or protected lanes.
Is there public land near Discovery Bay?
26,066 acres of parks and open public land lie inside Discovery Bay or within 10 miles of it (PAD-US), 29 of them inside the town line.
How much outdoors does Discovery Bay have?
Ahead of 35% of U.S. towns on the Outdoors grade, #655 of 847 in California. The grade combines the share of land that is conserved, miles of mapped trail per square mile of land, park acres per 1,000 residents and the share of residents within a half mile of a park. It’s a character grade, so it isn’t part of the overall grade. How it works.
Trail talk
Conditions, parking and favorite walks from Discovery Bay neighbors.
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 →