USDA Forest Service · Idaho

Mammoth Springs Campground

USDA Forest Service · Idaho, United States

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Drinking water
Yes
Restrooms
Yes
Elevation
5,653 ft
Dark sky
Bortle class 1
Cell coverage
T-Mobile weak · AT&T none · Verizon none (carriers' 4G LTE filings to the FCC, 2025-12; not measured here)
Access road
AVERY TIMBER CREEK (NFSR 201) · crushed aggregate or gravel · suitable for passenger cars
Nearest town
Avery, Idaho

About

US Forest Service campground. Mammoth Springs Campground features 8 camp units, vault toilets, and drinking water (July-September). Please observe the Pack it In Pack it Out refuse policy. Attractions include Dismal Lake (1 mile). Open season: June. Not reservable through Recreation.gov, so plan on first-come, first-served; check with the ranger district for current conditions and fees.

Fees

Overnight Use:
Peak Season (Water ON): Single Site: $15 per night (2 vehicles included per site)
Additional Vehicle: $5 per night (3 vehicle limit per site)
Non-Peak (Water OFF): $12 per night

Weather, month by month

MonthTypical highTypical lowColdest nightHottest dayYears with a night below 32°F
January28°17°-27°38°11 of 11
February27°16°-12°42°11 of 11
March35°21°4°53°11 of 11
April38°24°8°64°11 of 11
May50°33°22°74°9 of 11
June60°40°28°79°7 of 11
July75°52°38°87°0 of 11
August76°52°39°88°0 of 11
September63°44°29°79°2 of 11
October46°32°23°68°9 of 10
November36°24°-12°58°10 of 10
December26°17°1°40°10 of 10

Mid-month figures from 2016–2026 of daily weather at this spot (ERA5 reanalysis via Open-Meteo, CC BY 4.0), in °F. Typical is the median; coldest and hottest are the extremes seen.

Nearby campgrounds

All public campgrounds in Idaho · Every state and province · Facts read from the operator 2026-08-06. Confirm fees, rules and current status with the operator before you go.