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The Devil used to sleep at the sorcerer's hut, and each night he would collect a bag of stones and fly across the Venta. But the sorcerer made a rooster crow its morning song, causing all of the village roosters to sing too. The devil was frightened and spilled his stones across the river, forming the threshold of the waterfall.
Systems without this bedrock, however, are very sensitive to acid inputs because they have a low neutralizing capacity, resulting in pH declines even with only small inputs of acid. [3] At a pH of 5–6 algal species diversity and biomass decrease considerably, leading to an increase in water transparency – a characteristic feature of ...
This glossary of geography terms is a list of definitions of terms and concepts used in geography and related fields, including Earth science, oceanography, cartography, and human geography, as well as those describing spatial dimension, topographical features, natural resources, and the collection, analysis, and visualization of geographic ...
Chalk is slightly soluble in rainwater because rain is naturally slightly acidic. [7] The products of chalk weathering are dissolved in rainwater and are transported in stream flow. Chalk streams transport little suspended material (unlike most rivers), but are considered "mineral-rich" due to the dissolved calcium and carbonate ions. The ...
Rivers with a course that drops rapidly in elevation will have faster water flow and higher stream power or "force of water". This in turn produces the other characteristics of an upland river—an incised course, a river bed dominated by bedrock and coarse sediments, a riffle and pool structure and cooler water temperatures. Rivers with a ...
The canyon was eroded through bedrock that today divides the groundwater basins of the Inland Empire and the coastal plain. Because groundwater in the watershed generally flows from east to west, it is forced to the surface at the bedrock "sill" of Santa Ana Canyon, resulting in a perennial stream that prior to development flowed freely across ...
Scores of village sites, burial sites and other sacred locations now sit several hundred feet below the surface of Shasta Lake. Over 27 sacred sites lie underneath the water behind the dam. Tribal members argue that several reservation treaties originally set by the U.S. government in the 1850s were later broken so the filling of Shasta Lake ...
Another reservoir was constructed in the early 1900s by the City of Seattle on an ancient glacial lake bed. The city constructed a ninety-foot concrete dam and used bedrock to the west and a glacial moraine to the east as natural barriers. The reservoir was known as the Cedar Reservoir and was fed by the Cedar River Drainage.