Did You Know Colorado Has A Fish-shaped Reservoir?

Have you ever flown into Denver International Airport, looked out the airplane window, and spotted a body of water shaped like a fish?

Colorado’s Rueter–Hess Reservoir, located behind the Frank Jaeger Dam, plays a key role in supplying drinking water to the city of Parker. Keep scrolling to discover a few fun facts you might not know about this fish-shaped body of water.

What & Where Is Rueter-Hess Reservoir

Credit Rueter-Hess Reservoir

Rueter-Hess Reservoir is found in Douglas County, Colorado, not far from the ultra-fast-growing community of Parker. Positioned in the Newlin Gulch, the reservoir is visible from I-25 and is open four days a week. This fish-shaped body of water holds about 75,000 acre-feet of water, with a maximum depth of 184 feet. Visiting the reservoir at 9343 Double Angel Road requires a reservation and a parking permit (make an online reservation).

How the Reservoir Got Its Unique Name

Google Street

When the Parker Water & Sanitation District approached the Rueter family to purchase their land, they agreed under a few conditions. Rosie (Rueter) Hess asked that her married and maiden names be used in the name of the reservoir. If you visit, keep an eye out for the remnants of the Rosie and Percy Hess homestead near the base of the dam, near the old cottonwoods, according to PWSD.

Visiting & Recreational Guidelines

Since several communities rely upon Rueter-Hess Reservoir for drinking water, recreation is intentionally limited to help protect it. Rueter-Hess is a “quiet-water” experience that is best for paddlers. There is no swimming, camping, or gas-powered boats allowed.

✅ Boating: Kayaks, canoes, paddleboards, and small boats with electric trolling motors are permitted.
✅ Fishing: Anglers can catch and keep species like trout, largemouth bass, and bluegill. Other species are catch-and-release only, so always check posted rules before you cast.

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LOOK: The 15 Largest Lakes Found in Colorado

Take a look at Colorado's Top 15 largest lakes and reservoirs. Find out where they are in the state, and what landmarks are nearby each lake/reservoir. Colorado's largest reservoir is just down the road on Highway 50 not far from the Curecanti Recreation Area.

Gallery Credit: Wes Adams

NEXT: Colorado's Biggest Fish Lurking Beneath the Water's Surface

Colorado's rivers, lakes, and reservoirs are home to around 50 native species of fish. In total, there are around 101 species of fish found here. Scroll through the photos below to see which fish grow to be the largest ones found in the Rocky Mountains.