Mores Creek Hot Spring
A thermal spring in Ada County a dozen or so miles from Boise. What Mores Creek Hot Spring is on the ground is thinly recorded. The temperature is listed only as hot, with no figure, and nothing is entered for who owns the land or for public access. Reaching it takes a walk of four hundred feet or so from East Spring Shores Road.
Low foothill elevation for Idaho, around three thousand feet, with a mild average climate and modest precipitation. Snow comes in winter, though in amounts that do not shut the area for months the way the mountain springs get shut. The approach is short. Macks Creek Campground is close, under three miles. Beyond that the record has nothing on the surroundings.
No season is flagged as best. The short walk and low elevation make this a spring you could reach most of the year, with winter road conditions being the variable. Macks Creek Campground is the obvious place to stay. Before you plan around it, find out who owns the ground and if soaking is allowed, because neither is on record, and assume the water may be hotter than you expect since no temperature figure was filed.
Aircraft with laser scanners measured this ground to within inches. The scan strips out trees and buildings, leaving the bare shape of the land around Mores Creek Hot Spring.
Drag the handle to compare the two views. The orange dot marks the spring, in a frame about three quarters of a mile wide.
- Setting
- Hillside
- The spring sits on a steep slope that climbs to the north.
- Highest ground nearby
- 257 ft above the spring
- Within a quarter mile, to the north
A slice through the ground from west to east, about 0.6 miles end to end.
Elevation data: USGS 3D Elevation Program. Aerial imagery: USGS The National Map. Public domain.
That's about 1½ times the US average of 65. It's higher than at 44% of the springs on this site.
Heat flow measures the warmth working its way up through the ground from deep inside the earth. Where it runs high, rain and snowmelt that seep down through cracks in the rock come back up hot.
See every spring on the geothermal heat map →
Heat flow estimate: Stanford Thermal Earth Model (Aljubran & Horne, 2024), CC BY 4.0.
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Overview Macks Creek Campground is a very popular small campground just 25 miles from the Boise area along Arrowrock road off Highway 21 operated and managed by the US Army Corps of Engineers. The campground is reservation only May-September and closed to vehicle traffic the remainder of the year. Visitors make the trip to enjoy quality seasonal recreational activities like boating, swimming, camping, fishing, and hunting. Regular seasonal drawdowns occur each year which impact the recreation...
Mores Creek Hot Spring is road-accessible, so you can bring more gear.
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