Bortle 3 sites in the U.S.

List of Class 3 Bortle parks and places in the U.S. for stargazing, astrophotography, star parties, and club events. Often these are national and state parks and forests that are remote or "protected" against light pollution.

A Bortle value represents the potential of a location, not what it will be when you are there. Local factors such as dust, wildfire smoke, haze, humidity, clouds, or atmospheric turbulence can diminish the Bortle value that night.

The IDA column indicates if a site is an IDA-certified sanctuary, reserve, or park. Also use your local astronomy club for guidance as they will know the darkest places near you.

Blue Springs SP Alabama
Chattahoochee SP Alabama
Paul Grist SP Alabama
Everglades NP Florida
Hamburg SP Georgia
Kolomoki Mounds SP Georgia
Moccasin Creek SP Georgia
Providence Canyon SP Georgia
Seminole SP Georgia
Anderson Lake SFWA Illinois
Apple River Canyon SP Illinois
Jim Edgar Panther Creek Illinois
Sam Dale Lake Illinois
Siloam Springs SP Illinois
Lake Darling SP Iowa
Lake of Three Fires SP Iowa
Lake Wapello SP Iowa
Loess Hills SF Iowa
Moore-Gosch Memorial Park Iowa
Okamanpedan SP Iowa
Prairie Rose SP Iowa
Preparation Canyon SP Iowa
Rock Creek SP Iowa
Springbrook SP Iowa
Stephens SF Iowa
Yellow River SF Iowa
Buckhorn Lake SP Kentucky
Daniel Boone NF Kentucky
Catahoula Lake Louisiana
Chemin-A-Haut SP Louisiana
Cypremort Point SP Louisiana
Lake Fausse Pointe SP Louisiana
North Toledo Bend SP Louisiana
Palmetto Island SP Louisiana
South Toledo Bend SP Louisiana
Point Lookout SP Maryland
Wolf Den Run SP Maryland
Kenneth Dubuque SF Massachusetts
Lake Dennison Massachusetts
Mohawk Trail SF Massachusetts
Bienville NF Mississippi
Clark Creek Natural Area Mississippi
Holmes County SP Mississippi
Homochitto NF Mississippi
Leroy Percy SP Mississippi
Tishomingo SP Mississippi
Chadron SP Nebraska
Fort Robinson SP Nebraska
Indian Cave SP Nebraska
Allegany SP New York
Bowman Lake SP New York
Camp Hero SP New York
Cedar Island SP New York
Davis SP New York
Gilbert Lake SP New York
Glimmerglass SP New York
Highly Flow SP New York
Krig Point SP New York
Long Point SP New York
Max V. Shaul SP New York
Montauk Point SP New York
Oquaga Creek SP New York
Pixley Falls SP New York
Robert G. Wehle SP New York
Southwick Beach SP New York
Whetstone Gulf SP New York
Nantahala NF North Carolina
New River North Carolina
Pettigrew North Carolina
Cross Ranch SP North Dakota
Fort Ransom SP North Dakota
Lake Sakakawea SP North Dakota
Pembina Gorge SRA North Dakota
Theodore Roosevelt NP North Dakota
Geauga SP park Ohio
Jackson Lake SP Ohio
Jesse Owens SP Ohio
Lake Hope SP Ohio
Beavers Bend SP Oklahoma
Foss SP Oklahoma
Great Plains SP Oklahoma
Little Sahara SP Oklahoma
Osage Hills SP Oklahoma
Quartz Mountain SP Oklahoma
Robbers Cave SP Oklahoma
Roman Nose SP Oklahoma
Salt Plains SP Oklahoma
Black Moshannon SP Pennsylvania
Chapman SP Pennsylvania
Clear Creek SP Pennsylvania
Cook Forest SP Pennsylvania
Elk SP Pennsylvania
Kinzua Bridge SP Pennsylvania
Little Pine SP Pennsylvania
McCalls Dam SP Pennsylvania
Mount Pisgah SP Pennsylvania
Parker Dam SP Pennsylvania
Poe Paddy SP Pennsylvania
Poe Valley SP Pennsylvania
Raymond Winter SP Pennsylvania
Simon Elliot SP Pennsylvania
Trough Creek SP Pennsylvania
Upper Pine Bottom SP Pennsylvania
Worlds End SP Pennsylvania
Battle of Rivers Bridge South Carolina
Francis Marion NF South Carolina
Hampton Plantation South Carolina
Big Hill Pond SP Tennessee
Great Smoky Mountains NP Tennessee
Mousetail Landing SP Tennessee
Sgt. Alvin York SP Tennessee
Enchanted Rock SNA park Texas
South Llano River SP park Texas
Douthat SP Virginia
Grayson Highlands SP Virginia
Holliday Lake SP Virginia
Natural Bridge SP park Virginia
Blackwater Falls SP West Virginia
Chippewa Moraine SRA Wisconsin
Copper Falls SP Wisconsin
Governor Thompson SP Wisconsin
Whitefish Dunes SP Wisconsin
Wildcat Mountain SP Wisconsin
Yellowstone Lake SP Wisconsin

NP = national park | SP = state park | NF = national forest | SF = state forest | NWR = national wildlife reserve | SRA = state recreational area

U.S. nighttime lights satellite map

US night lights satellite image

2019 satellite image showing US light pollution. See full interactive map at Blue Marble Navigator.

U.S. light pollution map

US light pollution map

2015 map showing US light pollution based on Bortle scale/SQM data. See full interactive map at