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Classification of Wetlands and Deepwater Habitats of the United States

Plates 41-44


GIF - Lacustrine System
Plate 41.--Classification: SYSTEM Lacustrine, SUBSYSTEM Limnetic, CLASS Aquatic Bed, SUBCLASS Rooted Vascular, DOMINANCE TYPE Nymphaea odorata, WATER REGIME Permanently Flooded, WATER CHEMISTRY Fresh-Circumneutral. Subordinate plants in the Aquatic Bed include bladderworts (Utricularia spp.). Yellow-eyed grass (Xyris smalliana) grows on floating mats of peat along the shore (foreground). Water depth in this 0.8-ha (2-acre) bog lake exceeds 3 m (10 ft). (Washington County, Rhode Island; July 1977; Photo by F. C. Golet)

GIF - Lacustrine System
Plate 42.--Classification: SYSTEM Lacustrine, SUBSYSTEM Littoral, CLASS Unconsolidated Shore, SUBCLASS Cobble-Gravel, WATER REGIME Seasonally Flooded, WATER CHEMISTRY Fresh. At the time of photography, the level of Yellowstone Lake was near its seasonal low point. Due to snowmelt, the level of the lake rises to a peak in early July and then slowly declines until the following spring. This entire beach is inundated each summer. (Yellowstone National Park, Teton County, Wyoming; May 1985; Photo by F. C. Golet)

GIF - Lacustrine System
Plate 43.--Classification: SYSTEM Lacustrine, SUBSYSTEM Littoral, CLASS Unconsolidated Shore, SUBCLASS Sand, WATER REGIME Intermittently Flooded, WATER CHEMISTRY Fresh. Water levels in the Great Lakes generally fluctuate little during a single year, but they may rise and fall considerably over a period of several years. The water level in Lake Michigan was at an all-time high when this photo was taken. As a result of long-term changes in lake levels and seiches produced by storms, lake waters inundate part or all of this beach on an irregular basis. (Indiana Dunes National Lakeshore, Porter County, Indiana; May 1985; Photo by F. C. Golet)

GIF - Lacustrine System
Plate 44.--Classification: SYSTEM Lacustrine, SUBSYSTEM Littoral, CLASS Unconsolidated Shore, SUBCLASS Mud, WATER REGIMES Temporarily Flooded and Seasonally Flooded, WATER CHEMISTRY Fresh, SOIL Mineral, SPECIAL MODIFIER Impounded. The flats exposed along the shore of this reservoir are temporarily flooded; the seasonally flooded zone is still inundated at the time of this spring photograph. (Park County, Wyoming; May 1985; Photo by F. C. Golet)

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