Political divisions (FIPS codes)

USGS map quadrangles

Sumdum C-4(1:63,360 Alaska quadrangle)

Sumdum(1:250,000 Alaska quadrangle)

Hydrologic units (watersheds)

Mainland(hydrologic unit)

190102(hydrologic accounting unit)

Arctic Slope(hydrologic subregion)

Alaska(hydrologic region)

Federal lands

Chuck River Wilderness(Wilderness)

Wilderness FS(Type of land area)

FS(Federal land areas administered by FS)

Tongass National Forest(National Forest)

National Forest FS(Type of land area)

FS(Federal land areas administered by FS)