Lake Powell

ARIZONA - UTAH


Lake Level
3,527.27 FEET
12/8/2022
Full Pool: 3,700.0
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Lake Powell News

What Every Boater Wants for the Holidays: 24/7 On-Water Assistance from TowBoatUS

BoatUS News

Date: 11/14/2022

Gadgets may make good holiday gifts. However, for a boater, having 24/7 on-the-water help just a call away is much better. Like belonging to an auto club for recreational boat owners, a BoatUS Unlimited Towing Membership provides professional on-water towing services by the TowBoatUS fleet - the nation’s largest

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What Did We Name Our Boats in 2022? Top 10 Boat Names List

BoatUS News

Date: 11/11/2022

Now that recreational boating is coming to a close in much of the country, BoatUS takes a look back at the Top 10 boat names ordered this season through its online boat graphics service and provides some commentary. Andiamo: Meaning “let’s go / we go / come on” in Italian, Andiamo remains in the

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Boat Winterizing Truth or Myth? Test Your Knowledge

BoatUS News

Date: 11/1/2022

Recreational boat owners are preparing their boats for a long winter’s nap, but sugarplums aren’t dancing in their heads. What may keep them up at night is hoping cold temperatures won’t damage their boats. Freshwater expands in volume by about 9% when it freezes and can push outward with a force of

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3 Boating Safety Tips Just Right for Fall Boating

BoatUS News

Date: 10/1/2022

Fall boating season has arrived, and with it come different types of risks that cold water and air temperatures bring. Here are three boating safety tips from the BoatUS Foundation for Boating Safety and Clean Water just right for leaf peeping season. A float plan is needed: A float plan is as simple as telling a

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No End In Sight: For Boating Season: 65% Planning to Boat Labor Day Weekend, 80% Will Extend Season

BoatUS News

Date: 8/29/2022

With gas prices continuing to fall and the summer boating season coming to a close, more boaters are expected to take to the water this Labor Day holiday. Boat Owners Association of The United States (BoatUS), the nation’s largest advocacy, services and safety group with more than 800,000 dues-paying members, is

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• River: Colorado River
• Length: 1,900 Miles
• Surface Area: 161,390 Acres
• Volume: 24,322,000 Acre Feet
• Average Depth: 132 Feet
• Maximum Depth: 583 feet
• Length: 186 Miles
Lake Powell is a reservoir on the Colorado River, straddling the border between Utah and Arizona (most of it, along with Rainbow Bridge, is in Utah). It is a major vacation spot that around two million people visit every year. It is the second largest man-made reservoir by maximum water capacity in the United States behind Lake Mead, storing 24,322,069 acre feet of water when full. However, due to high water withdrawals for human and agricultural consumption, and because of subsequent droughts in the area, Lake Powell is currently larger than Lake Mead in terms of volume of water currently held, depth and surface area.

Lake Powell was created by the flooding of Glen Canyon by the Glen Canyon Dam, which also led to the creation of Glen Canyon National Recreation Area, a popular summer destination. The reservoir is named for explorer John Wesley Powell, a one-armed American Civil War veteran who explored the river via three wooden boats in 1869.

In 1972, Glen Canyon National Recreation Area was established. It is public land managed by the National Park Service, and available to the public for recreational purposes. It lies in parts of Garfield, Kane, and San Juan counties in southern Utah, and Coconino County in northern Arizona. The northern limits of the lake extend at least as far as the Hite Crossing Bridge. A map centered at the confluence of the Escalante River 37°17?22?N 110°52?20?W with the Colorado River gives a good view of the extent of the lake.

Lake Powell is a water storage facility for the Upper Basin states of the Colorado River Compact (Colorado, Utah, Wyoming, and New Mexico). The Compact specifies that the Upper Basin states are to provide a minimum annual flow of 7,500,000 acre feet to the Lower Basin states (Arizona, Nevada, and California).

In the 1940s and early 1950s, the U.S. Bureau of Reclamation planned to construct a series of Colorado River dams in the rugged Colorado Plateau province of Colorado, Utah, and Arizona. Glen Canyon Dam was born of a controversial damsite the Bureau selected in Echo Park, in what is now Dinosaur National Monument in Colorado. A small but politically effective group of objectors led by David Brower of the Sierra Club succeeded in defeating the Bureau's bid, citing Echo Park's natural and scenic qualities as too valuable to submerge. By agreeing to a relocated damsite near Lee's Ferry between Glen and Grand Canyons, however, Brower did not realize what he had gambled away. At the time, Brower had not actually been to Glen Canyon. When he later saw Glen Canyon on a river trip, Brower discovered that it had the kind of scenic, cultural, and wilderness qualities often associated with America's national parks. Over 80 side canyons in the colorful Navajo Sandstone contained clear streams, abundant wildlife, arches, natural bridges, and numerous Native American archeological sites. By then, however, it was too late to stop the Bureau and its commissioner Floyd Dominy from building Glen Canyon Dam. Brower believed the river should remain free, and would forever after consider the loss of Glen Canyon his life's ultimate disappointment.

Construction on Glen Canyon Dam began with a demolition blast keyed by the push of a button by President Dwight D. Eisenhower at his desk in the Oval Office on October 1, 1956. The first blast started clearing tunnels for water diversion. On February 11, 1959, water was diverted through the tunnels so dam construction could begin. Later that year, the bridge was completed, allowing trucks to deliver equipment and materials for the dam, and also for the new town of Page, Arizona.

Concrete placement started around the clock on June 17, 1960. The last bucket of concrete was poured on September 13, 1963. Over 5 million cubic yards of concrete make up Glen Canyon Dam. The Dam is 710 feet high, with the surface elevation of the water at full pool being approximately 3700 feet. Construction of the Dam cost $155 million, and 18 lives were lost in the process. From 1970 to 1980, turbines and generators were installed for hydroelectricity. On September 22, 1966, Glen Canyon Dam was dedicated by Lady Bird Johnson.

Upon completion of Glen Canyon Dam on September 13, 1963, the Colorado River began to back up, no longer being diverted through the tunnels. The newly flooded Glen Canyon formed Lake Powell. It took 11 years for the lake to fill to the 3,700 feet level, on June 22, 1980. The lake level fluctuates considerably depending on the seasonal snow runoff from the Rocky Mountains. The all-time highest water level was reached on July 14, 1983, during one of the heaviest Colorado River floods in recorded history, in part influenced by a strong El Niño event. The lake rose to 3,708.34 feet above sea level, with a water content of 25,757,086 acre feet.

Colorado River flows have been below average since the year 2000, leading to lower lake levels. In the winter of 2005 (before the spring run-off) the lake reached its lowest level since filling, an elevation of 3,555.10 feet above sea level, which was approximately 150 feet below full pool. Since 2005 the lake level has slowly rebounded, although it has not filled completely since then. Summer 2011 saw the third largest June and the second largest July runoff since the closure of Glen Canyon Dam, and the water level peaked at nearly 3,661 feet, 77 percent of capacity, on July 30. However, the years 2012 and 2013 were, respectively, the third and fourth-lowest runoff years recorded on the Colorado River. By April 9, 2014 the lake level had fallen to 3,574.31 feet, largely erasing the gains made in 2011.

Colorado River levels returned to normal during water years 2014 and 2015 (pushing the lake to 3,606 feet by the end of water year 2015), a trend projected to continue in 2016. However, the Bureau of Reclamation in 2014 reduced the Lake Powell release from 8.23 to 7.48 million acre-feet, for the first time since the lake filled in 1980. This was done due to the "equalization" guideline which stipulates that an approximately equal amount of water must be retained in both Lake Powell and Lake Mead, in order to preserve hydro-power generation capacity at both lakes. This resulted in Lake Mead declining to the lowest level on record since the 1930s.
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