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The Salt River runs from eastern Arizona and joins the Gila River west of Phoenix.  It is used to maintain many reservoirs in the mountains east of Phoenix, the largest being The Theodore Roosevelt Reservoir.  These reservoirs provide water to the Phoenix area as well as creating excellent recreational opportunities.
Salt River Arizona recreation area, Desert Mountains, east of Phoenix Arizona
Billions of thermoacidophiles live in these waters which are 10 times more acidic than lemon juice and almost as much as battery acid. They convert the pool's hydrogen sulfide gas into sulfuric acid which breaks soil and rock into mud.
What a scenery
Nuorilang Waterfall at Jiuzhaigou National Park Sichuan, China
Image of Hidden secret hot spring along river of mountains with log cabin overlooking
Water flow at Las Vegas Wash east of Las Vegas and it goes to Lake Las Vegas and flows to Lake Mead.
Montezuma Well is part of Montezuma Castle National Monument in Arizona, USA. Ancient cliff dwelling is visible on the left side of the photograph.
Smooth flowing water creates a tranquil feeling as one enjoys the natural beauty of the Texas Hill Country.  This small river is known as Spring Valley Creek.  Many people enjoy Inks Lake State Park, Burnet Texas because of the wonderful hiking trails, and family activities such as fishing, kayaking, and camping in the natural parkland.
Beautiful view of the Sulfur Creek bend in the Capitol Reef National Park in Utah, USA
Tranquility Alongside Mountain Creek - Long exposure scenic nature landscape with flowing meandering creek through lush green valley.
Crystal Geyser near Green River, Utah.
Montezumas Well at Montezuma Castle National Monument near Rimrock, Arizona
Colorado River at Blythe California
Scattered across Yellowstone National Park, hot springs deep underground rise to the surface through limestone and deposit calcium carbonate building travertine terraces.
North Entrance Road Slide Lake view to Yellowstone National Park, Gardiner, Montana, USA.
Gjáin tranquil, scenic valley with many small waterfalls, ponds and lava rocks, plus volcano views.
The Verde River, near the town of Rio Verde, Arizona in the late winter.  This area is called the Needle Rock recreation area and used for year-round recreation.
Rural America
Landscape of early spring with green hills and river, mountains with last bits of snow.
A photo of a summer landscape.
Aerial view of Bryce Canyon on a beautiful summer day. Overlook of orange colorful hoodoos red rock formations in Bryce Canyon National Park, Utah - USA
Spring in the oasis Ash Meadows, in the Mojave Desert near Pahrump, Nevada, one of the few places where the endangered pupfish (Cyprinodon nevadensis mionectes) live.
Nature Scenic with Flowing Creek Through Canyon - Mountain canyon wilderness area with lush green foliage and clear snowmelt water coming down from above.
Dry waterfall and puddle landscape in Roblelacasa Guadalajara, Spain
Clark Fork near Missoula, Montana in USA, North America.
beautiful lake Mead, Arizona
Culvert Geyser view of Old Faithful Geyser Erupt in Yellowstone National Park, Wyoming, USA.
Free Images: "bestof:Pipe Spring NM04.jpg Pipe Spring National Monument is located in northwest Arizona on the border of Utah United States View to the interior of Winsor Castle"
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