Army Corps of Engineers · Iowa

Acorn Valley

Army Corps of Engineers · Iowa, United States

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Sites
91
Hookups
29 electric, 3 with water, 1 no hookups
Season
May 1 to October 14
Max RV length
72 ft
Group sites
Yes
Drinking water
Yes
Showers
Yes
Pets
Yes
Elevation
945 ft
Dark sky
Bortle class 5
Cell coverage
T-Mobile weak · Verizon weak · AT&T good (carriers' 4G LTE filings to the FCC, 2025-12; not measured here)
Lake
Saylorville Lake
Nearest town
JOHNSTON
Address
SAYLORVILLE LAKE ADMINISTRATION OFFICE, JOHNSTON, IA, 50131-1941
Phone
515-276-0429
Activities
Camping, Educational Programs, Fishing, Hiking, Hunting, Marina, Mountain Biking, Swimming, Water Skiing, Wildlife Viewing

90 numbered sites are mapped one by one - open the site map to pick yours.

About

Overview

Acorn Valley Campground is located on the 26,000-acre Saylorville Lake Project, which stretches over 50 miles up the Des Moines River Valley.

The lake provides a wide variety of recreational activities, including camping, bicycling, boating, swimming, fishing, hiking and hunting.

Recreation

Anglers enjoy the lake for its abundance of walleye, wiper, largemouth bass, catfish, crappie and northern pike.

The paved Neal Smith Trail winds 24 miles from Des Moines to Big Creek State Park and connects the campgrounds on the east side of the lake. It is designated as a National Recreation Trail and is used for biking, hiking, jogging, walking and in-line skating.

Facilities

The campground offers 29 family sites with electric hookups and 54 primitive walk-to tent sites. The campground also features 2 group tent camping areas; a youth group camping area with special restrictions to organized youth as well as a standard group area open to all visitors. Amenities include flush toilets, showers, drinking water and a dump station.

Nearby facilities include picnic areas with group shelters, boat ramps, a marina and a fishing dock.

Natural Features

The mature Bur Oaks at the entrance to Acorn Valley beckon visitors to explore its 26 acres on the fringe of an upland timber stand.

Wildlife is abundant throughout the area. White-tailed deer, turkeys, pheasants, waterfowl and other small game animals roam the lands around the lake.

Weather, month by month

MonthTypical highTypical lowColdest nightHottest dayYears with a night below 32°F
January28°9°-24°54°11 of 11
February36°17°-22°67°11 of 11
March51°30°7°74°10 of 11
April63°40°22°81°5 of 11
May72°54°38°88°0 of 11
June84°64°49°98°0 of 11
July85°68°56°96°0 of 11
August82°66°56°94°0 of 11
September81°61°47°93°0 of 11
October66°45°26°83°3 of 10
November49°33°5°72°6 of 10
December38°24°-13°71°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 Iowa · Every state and province · Facts read from the operator 2026-02-25. Confirm fees, rules and current status with the operator before you go.