East Siberian Sea runoff into the East Siberian Sea is relatively small at about 250 km/year that makes only 10% of the total runoff in all the Arctic seas of Russia. The largest contribution is from the Kolyma River at 132 km, followed by the Indigirka River at 59 km. Most runoff (90%) occurs in summer; it is concentrated near the coast, owing to the weak river currents, and therefore does not significantly affect the sea hydrology. The water exchange between the neighboring seas is as follows. The annual outflow to the Laptev Sea, Chukchi Sea and Arctic Ocean is 3,240, 6,600 and
East Demerara Water Conservancy East Demerara Water Conservancy The East Demerara Water Conservancy, often called the EDWC, is one of Guyana's major water storage and flood control facilities. It is located in Region No. 4 - Demerara-Mahaica. Over 500,000 citizens of Guyana inhabit the basin that lies below and between the sea defences and the EDWC Dam in a 48 km band from Georgetown to Mahaica. The EDWC serves to irrigate thousands of hectares of rice and other crops within this area by storing rain water for dry periods and it also provides one of the primary source(about 60%) of drinking water for the