Petaluma River Marsh Wildlife Area
Managed by California Department of Fish and Game
137 acres
Dog rules not recorded
No trailhead mapped yet
A−Outdoors
Outdoors in Black Point-Green Point
29% of Black Point-Green Point’s land is conserved: 505 acres
321 acres are parks and preserves, 194 per 1,000 residents. 97% of residents live within a half mile of a park. 0.1 miles of mapped trail cross Black Point-Green Point.
Ahead of 84% of U.S. towns. What drives it
Conserved land
29%
505 acres · of 2.7 sq mi of land
Trails
0.1 mi
0.0 per sq mi of land
Park land
321 ac
194 acres per 1,000 residents
Near a park
97%
of residents within ½ mile
Bike routes
1.7 mi
1.7 mi lanes
Lakes & rivers
1
1 boat launch
What kind of outdoors town is Black Point-Green Point?
Read from the map. The page puts what stands out first.
Outdoors grade
How much outdoors does Black Point-Green Point have?
On conserved land, trails, park land and how close residents live to a park, Black Point-Green Point is ahead of 84% of U.S. towns. Conserved land holds the grade up; trail miles pull it down.
A−
OutdoorsA character grade: shown, never part of Black Point-Green Point’s overall grade.
Conserved land29% of the land · typical CA town 4% · U.S. 4%ATrails0.0 miles of mapped trail per square mile of land (0 mi) · CA 0.9 · U.S. 0.4C−Park land194 acres of park per 1,000 residents (321 acres) · CA 5 · U.S. 13AParks close to home97% of residents within a half mile of a park · CA 91% · U.S. 72%A−
All U.S. towns we grade (21,298)Ahead of 84%
LessMore
Water is 6% of Black Point-Green Point’s area (0 of 3 square miles), so every share here is of land; over land and water together, the conserved share would read 27%.
How sure. Graded on any three of the four inputs instead, the letter would range from B+ to A+. Trails and many small parks come from OpenStreetMap, mapped by volunteers, so coverage varies from town to town; the half mile is a straight line from each census block, so a river or highway in the way isn’t counted against it.
PAD-US, OpenStreetMap (© OpenStreetMap contributors), Census 2025 Gazetteer and 2020 blocks; details in Sources below. How TownRatings grades the outdoors →
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.
Deer Island Preserve
Managed by Marin County Parks
22 acres0.1 mi of trail
Dog rules not recorded
No trailhead mapped yetWebsite ↗
Novato Lands 005
Managed by Marin County Parks
2 acres
Dog rules not recorded
No trailhead mapped yet
All 5 parks & preserves
Deer Island Preserve22 acres · 0.1 mi of trail · Marin County Parks
Petaluma River Marsh Wildlife Area137 acres · California Department of Fish and Game
Bahia Wetlands5 acres
Novato Lands 0052 acres · Marin County Parks
Black Point Boat Launch1 acres · Marin County Parks
DirectionsWho protects it
505 conserved acres
29% of Black Point-Green Point’s land. Water is left out: Black Point-Green Point has 2.7 square miles of land and 0.2 of water, so the share counts land only. Who manages Black Point-Green Point’s conserved land, from the USGS Protected Areas Database. Approximate, because parcels can overlap.
State fish & wildlife279 ac
Land trusts & nonprofits165 ac
USDA easements (NRCS)144 ac
Other state land141 ac
Regional agency12 ac
County2 ac
Town or city1 ac
State Conservation Area · 419 acPrivate Conservation · 165 acConservation Easement · 144 acLocal Other or Unknown · 15 acLocal Conservation Area · 2 ac
Good to know
Conserved doesn’t always mean open to visitors. 1 acre is a conservation easement, usually private land. The walks above are places people visit.
The biggest protected parcels
| Parcel (PAD-US) | Managed by | Acres | Public access |
|---|---|---|---|
| Petaluma Marsh Wildlife Area State Conservation Area | State fish & wildlife | 278 | Open |
| Marin Audubon- Simmons Slough Wildlife Corridor Private Conservation | Land trusts & nonprofits | 144 | Closed |
| Open Space State Conservation Area | Other state land | 141 | Open |
| Simmons Slough Wildlife Corridor Private Conservation | Land trusts & nonprofits | 18 | Closed |
| Novato Sanitation District Local Other or Unknown | Regional agency | 10 | Restricted |
| Black Point Boat Launch Local Other or Unknown | County | 2 | Open |
| Petaluma Marsh Private Conservation | Land trusts & nonprofits | 2 | Closed |
| Deer Island Open Space Preserve Local Conservation Area | Regional agency | 2 | Open |
| Novato Lands 005 Local Other or Unknown | Town or city | 1 | Open |
| Marin County Flood Control Local Other or Unknown | Regional agency | 1 | Open |
Things to do
1 places to go in Black Point-Green Point
Beaches, playgrounds, peaks, falls and more. Pick a kind.
Boat launches in Black Point-Green Point
1 boat launch without a name on the map. Tap “Show all on map” to see it.
Trails & water
1 lakes & rivers
Lakes & rivers tap for directions
Biking & sports
1.7 miles of bike routes
Bike lanes are often missing from the map in smaller towns, so that number is likely low.
1.7 mi
painted or protected bike lanes
Courts & fields
1Tennis
Includes school and college facilities, which aren’t always open to the public.
When to get out
The best walking months in Black Point-Green Point: April to August
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 | 14.6 | 13.6 | 12.4 | 11.1 | 10.0 | 9.5 |
| High (°F) | 57 | 60 | 62 | 64 | 68 | 72 | 72 | 73 | 74 | 71 | 63 | 57 |
| Rain (in) | 5.7 | 5.6 | 4.0 | 1.8 | 0.8 | 0.2 | 0.0 | 0.1 | 0.1 | 1.4 | 3.1 | 6.0 |
July is the driest month (under 0.1 in) and September the warmest (highs of 74 °F). 6.0 inches fall in December, the wettest month. The climate in Black Point-Green Point →
Next door
Black Point-Green Point and its neighbors
Black Point-Green Point has the second most mapped trails of the 2 towns around it. Tap a town to see its outdoors.
| Town | Conserved of land | Trail mi per sq mi | Park acres per 1,000 | Near a park ½ mile | Outdoors |
|---|---|---|---|---|---|
| Black Point-Green Point | 29% | under 0.1 | 194 | 97% | A− |
| Novato | 45% | 3.0 | 123 | 98% | A+ |
The four inputs of the Outdoors grade, from the engine; shares are of land, not water.
Questions about parks and trails in Black Point-Green Point
Where can I hike in Black Point-Green Point?
The longest trail networks: Deer Island Preserve, 0.1 miles. Each one is on the map above, with directions to the nearest trailhead or parking.
How much of Black Point-Green Point is conserved land?
29% 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 Black Point-Green Point’s trails?
Petaluma River Marsh Wildlife Area and Deer Island Preserve don’t have dog rules recorded on the map; check the signs at the trailhead.
Where can I bike in Black Point-Green Point?
1.7 miles of bike routes are on the map: 1.7 of painted or protected lanes.
Is there public land near Black Point-Green Point?
51,821 acres of parks and open public land lie inside Black Point-Green Point or within 10 miles of it (PAD-US), 321 of them inside the town line.
How much outdoors does Black Point-Green Point have?
Ahead of 84% of U.S. towns on the Outdoors grade. 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 Black Point-Green Point 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 →