🌤 Weather at Rock Creek State Park by season
| Spring | Summer | Fall | Winter |
|---|---|---|---|
| 26–71 °F | 60–85 °F | 27–76 °F | 10–34 °F |
Each range runs from the coldest monthly average low to the warmest monthly average high in that season (1991-2020 climate normals), measured at Newton, 7 mi away, elevation 960 ft. Conditions at the park can differ from the station, especially where elevation differs — check a forecast before you go.
🎣 Iowa’s Hidden Lake Gem — 600-acre lake with 5-mph no-wake policy, sandy swimming beach, 14 miles of trails, boat and kayak rentals, and one of central Iowa’s finest campgrounds in the Jasper County prairie
In the gentle prairie landscape of Jasper County, roughly halfway between Des Moines and Iowa City, Rock Creek State Park wraps around a quiet 600-acre lake that offers something increasingly rare in the age of powerboats and jet skis: a strictly enforced 5-mph speed limit across the entire lake. This no-wake policy transforms Rock Creek Lake into one of the most peaceful water recreation destinations in Iowa — a place where the loudest sound on a summer morning is the splash of a largemouth bass hitting a topwater lure, or the rhythmic dip of a kayak paddle as you glide along a shoreline fringed with oaks and prairie grasses.
The park encompasses 1,627 acres surrounding the lake, with a mix of restored tallgrass prairie, oak-hickory woodland, and wetland habitat that supports a surprising diversity of wildlife for a park in the agricultural heartland. A 14-mile network of multi-use trails circles the lake and connects to the nearby town of Grinnell, a well-stocked concession store rents boats and sells bait, and the modern campground provides a comfortable base for extended stays in a landscape that feels far more remote than its location — just off Interstate 80 — might suggest.
The Lake
| Feature | Details |
|---|---|
| Surface Area | 600 acres |
| Motor Policy | 5 mph speed limit — all boats (no-wake) |
| Swimming Beach | Sandy beach, unsupervised (no lifeguard) |
| Boat Launch | Public ramp available |
| Boat Rentals | Pontoons, fishing boats, canoes, kayaks, pedal boats (seasonal Apr 15–Oct 15) |
Fishing
| Species | Best Season | Method |
|---|---|---|
| Largemouth Bass | Spring, Summer | Plastics, topwater, spinnerbaits |
| Crappie | Spring, Fall | Jigs, minnows, brush piles |
| Bluegill | Summer | Worms, small jigs, docks |
| Channel Catfish | Summer, Fall | Cut bait, stink bait, bottom rigs |
| Walleye | Spring, Fall | Trolling, jigs, live bait |
Fishing is permitted 24 hours (special access rules between 10:30 PM and 4:00 AM). Iowa fishing license required.
Trails
| Trail | Distance | Surface | Uses |
|---|---|---|---|
| Lake Loop Trail | 8.5 miles | Natural surface | Hiking, mountain biking, horseback riding |
| Grinnell Connector | 5.5 miles | Paved | Biking, walking, running |
| Interpretive Trail | 0.5 miles | Natural surface | Nature walk, birdwatching |
Camping
| Detail | Information |
|---|---|
| Season | April 1 – November 15 |
| Reservation | 100% reservable (advance booking required) |
| Site Types | Electric and non-electric sites |
| Facilities | Modern restrooms, showers, fire rings |
| Waterfront Sites | Available — book early |
Essential Visitor Information
| Detail | Information |
|---|---|
| Address | 5627 Rock Creek West, Kellogg, IA 50135 |
| Hours | Open daily, year-round |
| Entrance Fee | Free |
| Concession Hours | Sun 7AM-7PM, Mon-Thu 7AM-8PM, Fri-Sat 7AM-9PM |
| Phone | (641) 236-3722 |
Getting There
- From Des Moines: 50 miles east (~50 minutes via I-80)
- From Iowa City: 65 miles west (~1 hour via I-80)
- From Grinnell: 6 miles west (connected by bike trail)
Best Time to Visit
| Season | Highlights | Crowd Level |
|---|---|---|
| Spring (Apr-May) | Crappie spawning, wildflowers, trail season opens | Low-Moderate |
| Summer (Jun-Aug) | Swimming, boat rentals, full campground | Moderate-High |
| Fall (Sep-Oct) | Walleye fishing, fall colors, quiet camping | Low-Moderate |
| Winter (Nov-Mar) | Ice fishing, cross-country skiing, snowmobiling | Very Low |
Nearby Attractions
- Grinnell: 6 miles — Grinnell College, downtown dining, bike trail
- Neal Smith National Wildlife Refuge: 25 miles west — tallgrass prairie, bison herd, elk
- Pella: 30 miles south — Dutch heritage, tulip festival, Vermeer windmill
- Trainland USA: 15 miles — model train museum (Colfax)
Are powerboats allowed on Rock Creek Lake?
Yes, powerboats are allowed, but all boat motors must operate at a 5-mph speed limit (no-wake) across the entire lake. This makes Rock Creek Lake exceptionally peaceful and ideal for fishing, kayaking, canoeing, and paddleboarding without the noise and waves of high-speed boats.
Is Rock Creek State Park free to enter?
Yes! There is no entrance fee for Rock Creek State Park. Camping fees apply for overnight stays and vary by site type (electric/non-electric). All campsites are 100% reservable — advance booking is required through the Iowa State Parks reservation system.
More parks nearby: Elk Rock State Park is a short drive away, while Three Mile Lake State Park lies within about an hour’s drive.
⛺ Camping at Rock Creek State Park: Campgrounds & Cabins
| Campsites | Iowa DNR's park page describes the campground as nearly 200 campsites with 101 electrical hookups. The Iowa State Parks reservation system lists 172 bookable units: 100 Standard Electric sites (20/30 or 20/30/50 amp), 69 Standard Non-Electric sites, 1 Buddy site and 2 Youth Group Only sites. RV lengths accommodated from 25 to 70 feet depending on site, both back-in and pull-through. Modern restroom and shower building, dump station on site. |
|---|---|
| Pets | Pets are not allowed at campsite #013; pets are allowed at the other standard sites. |
| Reservations | 100% of sites reservable, reservation required. Book online at iowastateparks.reserveamerica.com or by phone at (641) 236-3722. |
| Special sites | Buddy and youth-group-only sites available. Firewood sold on site. Dump station on site. |
| Season notes | Campground accepts reservations April 1-November 15 and is closed November 16-March 31. |
Camping questions about Rock Creek State Park
Can you camp at Rock Creek State Park?
Iowa DNR's park page describes the campground as nearly 200 campsites with 101 electrical hookups. The Iowa State Parks reservation system lists 172 bookable units: 100 Standard Electric sites (20/30 or 20/30/50 amp), 69 Standard Non-Electric sites, 1 Buddy site and 2 Youth Group Only sites. RV lengths accommodated from 25 to 70 feet depending on site, both back-in and pull-through. Modern restroom and shower building, dump station on site.
How do you reserve a campsite at Rock Creek State Park?
100% of sites reservable, reservation required. Book online at iowastateparks.reserveamerica.com or by phone at (641) 236-3722.
Are pets allowed at the Rock Creek State Park campground?
Pets are not allowed at campsite #013; pets are allowed at the other standard sites.
Source: iowadnr.gov (verified July 2026). Details change seasonally — confirm when booking.
🐾 Dogs & Pets at Rock Creek State Park
- Pets allowed? statewide rule
- Pets are allowed in Iowa state parks and recreation areas, including trails and campgrounds, but must be kept on a leash of six feet or less or confined.
- Leash rule statewide rule
- Leash or chain not to exceed 6 feet, led or carried by the owner, or confined
- Beaches & swim areas statewide rule
- Animals are prohibited within designated beach areas statewide
- Cabins & lodging statewide rule
- Only dogs or assistive animals are allowed in designated dog-friendly cabins/yurts (limit two dogs); all other cabins are pet-free; dogs must be kenneled if left unattended inside
- Statewide exceptions statewide rule
- Hunting dogs in designated hunting areas during season are exempt from the leash rule; pets may not be left unattended in campgrounds
Are dogs allowed at Rock Creek State Park?
Pets are allowed in Iowa state parks and recreation areas, including trails and campgrounds, but must be kept on a leash of six feet or less or confined. Individual parks can post stricter rules — check signage on arrival.
Rules verified July 2026 via iowadnr.gov. More: Iowa state parks guide · Dog rules in all 50 states compared
Park Location
Plan your gear for Rock Creek State Park
From our editorial guides, matched to this park’s activities:
