Water & the Forest ServiceThe Service, 2000 - 26 страници |
Често срещани думи и фрази
acre-feet acre-foot acres agement agency agency's Alaska Aquatic Biodiversity aquatic habitats aquatic species assessments average value Clean Water Action Colorado downstream ecosystems Endangered Species Act estimates Federal Figure fish flows from national forest management Forest Service region forests and grasslands Ground Cover groundwater hydrologic increased water instream flows Interior Columbia Basin issues Land Management landscape lower marginal value Mississippi municipal watersheds Nation's runoff national forest lands National Forest System needed Northwest Forest Plan Number off-stream Pacific Northwest percent pollution population potential protect rainfall range recreation refugia regimes relicensing process riparian areas River roads Rocky Mountain role sediment Southwest strategy streams surface runoff tion Tongass National Forest total runoff U.S. Geological Survey United USDA-FS Lands value of streamflow value of water Water Action Plan water flowing water from national water quality water resource regions water rights water runoff water supplies water yields Watershed and Air watershed conditions West wildlife
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Страница 17 - Reclaiming abandoned mines under an interagency initiative to coordinate the efforts of all land managers and owners to efficiently and comprehensively address entire watersheds rather than "spot treating
Страница 3 - The regions are 1: New England; 2: Mid-Atlantic; 3: South Atlantic-Gulf; 4: Great Lakes; 5: Ohio; 6: Tennessee; 7: Upper Mississippi; 8: Lower Mississippi; 9: Souris-Red-Rainy; 10: Missouri; 11: Arkansas-White-Red; 12: Texas-Gulf; 13: Rio Grande; 14: Upper Colorado; 15: Lower Colorado; 16: Great Basin; 17: Pacific Northwest; 18: California; 19: Alaska; 20: Hawaii; 21: Caribbean.
Страница 1 - The fresh water that falls on land as rain or snow, or that has been accumulated and stored over thousands of years as groundwater, is what people use Figure 2.
Страница 1 - Water in rivers is completely renewed every 16 days on average, and water in the atmosphere is renewed every 8 days, but the renewal periods of glaciers, groundwater, ocean water, and the largest lakes run to hundreds or thousands of years.
Страница 1 - Shortages of fresh water and the increasing pollution of water bodies are becoming limiting factors in the economic development of many countries, even countries not in arid zones.
Страница 10 - GOOD Ground Cover 60-75% of ground covered with plants and litter Surface Runoff 2% of rainfall Soil Loss 0.05 Tons per acre...
Страница 1 - Earth's surface is covered with water, the amount of fresh water available on land surfaces is a tiny fraction of the total...