by Alex Gugel , all rights reserved
MiscellaneousPioneer Yosemite History Center |
Brochure of Hetch Hetchy Valley. Published by the National Park Service (NPS).
Yosemite
National Park Service
U.S. Department of the Interior
Yosemite National Park
Hetch Hetchy Valley
Hetch Hetchy Valley on August 11, 1911. Photo by Matt Ashby Wolfskill, courtesy of the Library of Congress.
Introduction
Hidden in Yosemite National Park’s peaceful northwest corner, Hetch Hetchy Valley is a
treasure worth visiting in all seasons. In spring, two of North America’s tallest waterfalls
plummet spectacularly over thousand-foot granite cliffs. The dramatic cliffs surrounding
these waterfalls add to the grandeur that John Muir compared to the more well known
Yosemite Valley. In 1870, Muir called Hetch Hetchy Valley “a wonderfully exact
counterpart of the great Yosemite.” In the early spring through late fall, visitors have easy
access to a vast wilderness filled with high-country lakes, streams, and wildlife. A rare
snowy winter day gives adventuresome visitors a chance to explore on skis or snowshoes.
Early History
People have lived in Hetch Hetchy Valley
for more than 6,000 years. American
Indian cultures were prominent before
the 1850s when the first Euro-Americans
came looking for gold and a place to graze
livestock. The valley name probably derived
from the Miwok word, hatchhatchie, which
means “edible grasses.” Miwok names are
still used for features, including Tueeulala
Fall, Wapama Fall, and Kolana Rock.
The lifestyle of first inhabitants depended
on the natural resources of the land. They
would gather seeds and plants, hunt, and
trade. Meadow plants were particularly
valuable resources to these tribes. Today,
descendants of these people still use
milkweed, deergrass, bracken fern, willow,
and other plants for a variety of uses
including baskets, medicines, and string.
Modern History
As early as 1882, Hetch Hetchy Valley had
been considered a potential site for a new
reservoir.
development. Until the early 1900s,
Americans viewed wilderness as something
to conquer and natural resources as
infinite.
Preservationists, led by John Muir, wanted
the valley to remain untouched. They
maintained that a dam could be secured
outside “our wild mountain parks.” Muir
and his followers launched a campaign
to praise the virtues of Hetch Hetchy. For
the first time in the American experience,
a national audience considered the
competing claims of wilderness versus
The eight mile long Hetch Hetchy Reservoir and O’Shaughnessy Dam as seen today
(photo by Greg Lawler)
Flora and Fauna
Hetch Hetchy is home to a diverse array
of plants and animals. Gray pine, incensecedar, and California black oak grow in
abundance. The distinctive manzanita bush
is common, and many beautiful examples
of this red-barked shrub are seen along
the road. Spring and early summer bring
brightly colored wildflowers including
Dam supporters were convinced that a
reservoir could offer tremendous social
and economic benefits. The fastest growing
city in the West, San Francisco was facing
a chronic water and power shortage. In
1906, an earthquake and fire devastated
San Francisco, adding urgency and public
sympathy to the search for an adequate
water supply. Congress passed the Raker
Act in 1913, authorizing the construction
of a dam in Hetch Hetchy Valley as well as
another dam at Lake Eleanor.
The first phase of construction on the
O’Shaughnessy Dam (named for the
chief engineer) was completed in 1923
and the final phase, raising the height of
the dam, was completed in 1938. Today
the 117-billion-gallon reservoir supplies
pristine drinking water to 2.4 million Bay
Area residents and industrial users. It also
supplies hydro-electric power generated
by two plants downstream. The reservoir is
eight miles long and the largest single body
of water in Yosemite.
lupine, wallflower, monkey flower, and
buttercup. Seventeen species of bats
inhabit this area of the park, including the
largest North American bat, the western
mastiff. This large bat is only one of two
bats in Yosemite whose echolocation can
be heard by the human ear. Also, be alert to
sightings of rattlesnakes and black bears.
Exploring
Hetch Hetchy
Hetch Hetchy’s relatively low elevation provides for one of the longest hiking seasons
in Yosemite, and the varied trails include something for everyone. Carry plenty of water
and sunscreen and watch for rattlesnakes and poison oak. Overnight backpackers need a
wilderness permit, which can be obtained at the Hetch Hetchy Entrance Station at no cost.
Bear canisters are required for backcountry food storage for overnight hikers.
• Wapama Fall is reached via a five-mile, round-trip hike that follows the shoreline of the
reservoir with moderate up and downhill hiking. The trail includes spectacular views of
Tueeulala and Wapama Falls. To begin the trail, cross the dam and pass through the tunnel.
• The Lookout Point Trail begins at the entrance station. This two-mile hike involves
moderate climbing and brings hikers to a rocky outcropping overlooking Hetch Hetchy.
• The trail to Rancheria Falls continues past Wapama Fall and may be done as either a long
day hike (13 miles round trip) or a backpacking trip. Along the way, hikers will see beautiful
views of the valley and waterfalls. Backpackers can access Tiltill or Rancheria mountains
and the vast northwest wilderness of Yosemite from the Rancheria area.
Wapama Falls (photo by Greg Lawler)
• The Poopenaut Trail begins at a signed trailhead four miles past the entrance station. This
strenuous 2.5-mile, round-trip hike to the Tuolumne River has 1,229 feet of elevation gain.
• Smith Peak (7,751 feet) is the highest point in the area and offers outstanding views. It has
two trailhead options. One route begins six miles beyond the entrance station. This trail is
13 miles round-trip with 3,700 feet elevation gain. The other route begins at the entrance
station and is 16 miles round-trip with 3,300 feet of elevation gain. The Smith Peak trails can
be used to access the Yosemite high country.
Kolana Rock (NPS photo)
• The Laurel/Vernon/Rancheria loop is a multi-day, 29-mile hike that includes spectacular
views of Hetch Hetchy, beautiful high-Sierra lakes, and access to the park’s northern
wilderness. The first four miles of this loop follow the old Lake Eleanor Road as it climbs
out of the valley. This portion may also be done as a more strenuous 8-mile day hike.
Frog Creek
Eleanor Creek
Yosemite Wilderness
Cherry Lake
(Lake Lloyd)
Tiltill
Mountain
Lake Vernon
Mt. Gibson
ek
Laurel Lake
Tilti
ll
Cre
Lake Eleanor
Tueeulala Wapama Falls
Falls
Hetch Hetchy
Dome
Miguel
Meadow
Tiltill
Valley
h Hetchy Re
se
r
Kolana Rock
Rancheria Falls
vo
O’Shaughnessy Dam
tc
He
Rancheria
Creek
ir
Le Conte Point
Poopenaut Valley
Smith Peak
Tuolumne River
Smith Meadow
Lookout
Point
Road
Trail
Base
Line
Camp
Cottonwood Creek
Harden Lake
Mather Ranger Station
Entrance Station
Specific
Regulations
Water Quality: Swimming and boating are prohibited in Hetch Hetchy Reservoir in order
to maintain a clean source of drinking water.
Pets: Dogs and other pets are prohibited on all trails and on the dam. Wild animals are
threatened by domestic animals in their territory and may endanger your pets. Dogs are
allowed in the parking area but must be leashed at all times.
Fishing: Fishing is allowed year-round in most lakes and the Hetch Hetchy Reservoir and
part of the year in most rivers and streams. A valid California fishing license is required.
Hetch Hetchy Reservoir: Daily bag limit is five per day and ten in possession.
Tuolumne River and area streams: Fishing season is open from the last Saturday
in April through November 15th. The daily bag and possession limit is two. Special
fishing regulations in the Tuolumne River below the dam require the use of artificial
lures with barbless hooks. Only fish 12 inches or larger may be kept.
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