 | Pyramid Lake, Nevada
Unusual rock formations jut out of Nevada's Pyramid Lake, a saltwater lake which provides a home to pelicans and serves as the subject of Indian legends.
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| The History of Lake Champlain
Before roads or trains, Vermont's Lake Champlain served as the state's first 'superhighway' upon which sailboats and steamships moved people and goods.
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| The Stressed Salton Sea
Stressed due to salinity levels, temperature changes and agricultural runoff, the Salton Sea often has dead fish floating around its perimeter.
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| Adirondack Mountains - Glacial Evidence
A giant 'glacial erratic' boulder and a debris-dammed lake are evidence that glaciers once flowed across what is now the Adirondacks.
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| Acadia National Park - Forest and Pond
Forests in the lower altitudes of Maine's Acadia National Park are broad and lush, made up of birches, maple, spruce, pine and cedar trees.
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| Cape Cod National Seashore - Kettle Pond
A snapping turtle - like the one found at a kettle pond at Cape Cod - may not have teeth, but its skull is shaped so that it can still deliver quite a bite.
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| Crab Orchard, Illinois - Pond and Forest
Beavers leave their mark on a woodland pond at Crab Orchard National Wildlife Refuge in Illinois, while other creatures do their best to soak up sun rays.
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| Kelleys Island, Lake Erie - Shoreline
The shore of Kelleys Island on Lake Erie is a place where ecosystems overlap - where a forest meets the freshwater shore of the great lake.
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| Kelleys Island, Lake Erie - Pond
Non-poisonous watersnakes and painted turtles are common inhabitants of standing freshwater ponds at Kelleys Island in Lake Erie.
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| Wisconsin's Raspberry Island Lighthouse
Those with an interest in maritime history find the lighthouses of Lake Superior worth the journey to visit.
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| Mount St. Helens - Re-emerging Life
Not long after the violent Mount St. Helens eruption, life is returning to the region, especially near bodies of water.
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| Pyramid Lake, Nevada - Alkaline Lake
Nevada's Pyramid Lake is slowly becoming more alkaline as water evaporates in the heat and more minerals are deposited.
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| Pyramid Lake, Nevada - Dropping Lake Levels
Water levels on Pyramid Lake in Nevada fluctuate from year to year, providing new habitat for plants as the waters recede.
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| Guana River State Park
Varying tide levels and calcium-rich soils create distinct and unusual ecosystems at Florida's Guana River State Park.
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| Crater Lake in Winter
Mostly inaccessible in winter due to heavy snows, Crater Lake is a beautiful and isolated destination for those willing to trek in on skis or snowshoes.
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| Crater Lake Floor Map
Using advanced mapping technology, scientists are able to study the varied contours of the bottom of volcano-formed Crater Lake.
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| Lake Okeechobee
Famous for its bass and other fish, Florida's Lake Okeechobee draws anglers from near and far - yet it has more to offer than just fishing.
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| Florida's West Lake Park
An environmental leader saved what is now Florida's West Lake Park from development; the park continues to provide prime habitat for wildlife.
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| Salamander Pond Ecosystem
The life and death of multitudes of plants and creatures contribute to the dramatic ecosystem of a marshy pond.
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| Vernal Pools
Bumpy prairie terrain with poor drainage creates unusual microscopic ecosystems known as vernal pools.
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| Coeur d'Alene Tribe
Removed from their homeland a century ago, the Coeur d'Alene Indian Tribe is now trying to rectify past environmental wrongs.
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| Lake Pend Oreille
Lake Pend Oreille is one of Idaho's great destinations for artists, climbers and anglers.
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| Clear Lake Dive
Divers explore the depths of Oregon's Clear Lake to catch a glimpse of submerged ancient trees, victims of a volcanic eruption.
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| Map Making Artist
Intricate lake contours provide inspiration for map maker Todd Ronning, who carves their shapes into blocks of wood.
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| Dale Hollow Lake State Park
Dale Hollow Lake is Kentucky's newest State Resort Park, offering the public boating, hiking, camping, and wildlife viewing opportunities.
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| Kentucky Regatta
Sailing offers boaters opportunity for sport, fun, challenge, freedom and a great chance to take a break from the stress of daily life.
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| Mill Creek Lake
Mill Creek Lake is tucked away in the wooded hills of Kentucky's Natural Bridge State Park.
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| Metropolis Lake
Surrounded by cypress trees and various wildlife, Metropolis Lake is one of Kentucky's last undisturbed natural lakes.
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| Swan Lake Wildlife Management Area
Formed by a great earthquake centuries ago, Swan Lake is the largest natural lake in Kentucky.
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| Oregon's Abert Lake
Oregon's only saltwater lake, Lake Abert provides a resting place for migrating birds and a plentiful source of brine shrimp.
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| Idaho's Lake Pend Oreille
Lake Pend Oreille's once-abundant Kokanee Salmon are gradually disappearing, possibly due to dams.
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| Lake Coeur d'Alene
Still feeling the effects of mining from a century ago, the water of Lake Coeur d'Alene is clean now, but heavy metal-laden sediments lurk beneath.
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| Idaho's Priest Lake
Priest Lake has become a site of conflict between land developers who want to build homes and conservationists who want to see the land preserved.
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| Bear Lake
Bear Lake, renowned for its brilliant blue color, has played a part in human history in southeast Idaho for hundreds of years.
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| Harnessing Bear River
Settlers around Bear Lake adopted a novel approach to reserving water for use in irrigation and electricity.
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| Bear Lake Marsh
Bear Lake Marsh plays a central role in the local environment, providing nesting grounds for birds and filtering silt and pollutants from the river.
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| The Fish of Bear Lake
Cutthroat Trout, the once-great native fish of Bear Lake, have been reduced in size due to the introduction of Mackinaw.
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| Iowa's Geography - Lake Red Rock
Iowa's Lake Red Rock was built to help prevent the floods that began occurring after certain land use methods were put into practice.
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| Iowa's Streams and Marshes
The glacial activity that formed Iowa's lakes also formed marshy fens and streambeds whose ecosystems vary with the amount of water that flows through them.
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| Grayson Lake
Kentucky's Grayson Lake, besides providing gorgeous scenery, is the home to a developing wildlife enhancement project.
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| Dragonfly Study - Part 1
Older than the dinosaurs, dragonflies are beautiful and fascinating, yet relatively unknown.
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| Dragonfly Study - Part 2
Older than the dinosaurs, dragonflies are beautiful and fascinating, yet relatively unknown.
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| Sunken Canoe
An ancient dugout canoe, discovered at the bottom of a mountain lake, was probably sunk there on purpose by ancient root-gatherers.
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| Reelfoot Lake
One family has adapted its tradition of boat making to suit the unique shallow waters of Tennessee's Reelfoot Lake.
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