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It is a member of the family Poeciliidae and, like almost all American members of the family, is live-bearing. [4] Guppies originate from northeast South America, but have been introduced to many environments and are now found all over the world. They are highly adaptable and thrive in many different environmental and ecological conditions. [5]
Bellamy Reservoir. Following is a list of dams and reservoirs in New Hampshire.. All major dams are linked below. The National Inventory of Dams defines any "major dam" as being 50 feet (15 m) tall with a storage capacity of at least 5,000 acre-feet (6,200,000 m 3), or of any height with a storage capacity of 25,000 acre-feet (31,000,000 m 3).
The dam is owned and operated by the New England District, North Atlantic Division, Army Corps of Engineers. The seasonal flood-control reservoir created by the dam has a maximum capacity of 93,400 acre-feet (120 million cubic meters), but is normally dry, apart from the normal flow of the Blackwater. The site includes 8 miles (13 km) of river ...
The Blackwater Reservoir was formed by constructing a mass concrete gravity dam over ½ mile (800 m) across the Blackwater, the main tributary of the River Leven, with a catchment area of 60 square miles (160 km 2). Water is conveyed along a covered concrete conduit 3.5 miles (5.6 km) long, which also collects water from three side stream intakes.
The dam upstream holds more water for farm irrigation during summers than it should, so the river is turned into the slow open sewage canal. [113] Has been an "ecological black spot" for years. [113] Meža Austria and Slovenia: The Meža has been the most polluted river in Slovenia.
At the source the Gillbach provides cooling water for the Niederaussem Power Station. As a consequence, the stream is much warmer than most other streams in Central Europe and even hosts tropical fish species like guppies [ 2 ] or convict cichlids [ 3 ] that have been released by private pet holders.
[4] [5] [6] [11] The Tapajós and Xingu alone account for 6% and 5%, respectively, of the water in the Amazon basin. [12] Examples of clearwater rivers originating in the Guiana Shield include the upper Orinoco (above the inflow of the blackwater Atabapo and whitewater Inírida–Guaviare), Ventuari, Nhamundá, Trombetas, Paru, Araguari and ...
Sewage treatment plants mix these organisms as activated sludge or circulate water past organisms living on trickling filters or rotating biological contactors. [5] Aquatic vegetation may provide similar surface habitat for purifying bacteria, protozoa, and rotifers in a pond or marsh setting; although water circulation is often less effective.