Hydrological transport modelAn hydrological transport model is a mathematical model used to simulate the flow of rivers, streams, groundwater movement or drainage front displacement, and calculate water quality parameters. These models generally came into use in the 1960s and 1970s when demand for numerical forecasting of water quality and drainage was driven by environmental legislation, and at a similar time widespread access to significant computer power became available.
Clean Water ActThe Clean Water Act (CWA) is the primary federal law in the United States governing water pollution. Its objective is to restore and maintain the chemical, physical, and biological integrity of the nation's waters; recognizing the responsibilities of the states in addressing pollution and providing assistance to states to do so, including funding for publicly owned treatment works for the improvement of wastewater treatment; and maintaining the integrity of wetlands.
InsecticideInsecticides are pesticides used to kill insects. They include ovicides and larvicides used against insect eggs and larvae, respectively. Insecticides are used in agriculture, medicine, industry and by consumers. Insecticides are claimed to be a major factor behind the increase in the 20th-century's agricultural productivity. Nearly all insecticides have the potential to significantly alter ecosystems; many are toxic to humans and/or animals; some become concentrated as they spread along the food chain.
OuagadougouOuagadougou (ˌwɑːɡəˈduːɡuː , ˈwɔɣədəɣʊ, waɡaduɡu) is the capital of Burkina Faso and the administrative, communications, cultural, and economic centre of the nation. It is also the country's largest city, with a population of 2,415,266 in 2019. The city's name is often shortened to Ouaga. The inhabitants are called ouagalais. The spelling of the name Ouagadougou is derived from the French orthography common in former French African colonies. Ouagadougou's primary industries are food processing and textiles.
Kano (city)Kano (Ajami: كَنُوْ) is a city in northern Nigeria and the capital of Kano State. It is the second largest city in Nigeria after Lagos, with over four million citizens living within . Located in the Savanna, south of the Sahel, Kano is a major route of the trans-Saharan trade, having been a trade and human settlement for millennia. It is the traditional state of the Dabo dynasty who have ruled as emirs over the city-state since the 19th century.
BamakoBamako (ߓߡߊ߬ߞߐ߬ Bàmakɔ̌, 𞤄𞤢𞤥𞤢𞤳𞤮 Bamako) is the capital and largest city of Mali, with a 2009 population of 1,810,366 and an estimated 2023 population of 2,929,000. It is located on the Niger River, near the rapids that divide the upper and middle Niger valleys in the southwestern part of the country. Bamako is the nation's administrative center. The city proper is a cercle in its own right. Bamako's river port is located in nearby Koulikoro, along with a major regional trade and conference center.
DDTDichlorodiphenyltrichloroethane, commonly known as DDT, is a colorless, tasteless, and almost odorless crystalline chemical compound, an organochloride. Originally developed as an insecticide, it became infamous for its environmental impacts. DDT was first synthesized in 1874 by the Austrian chemist Othmar Zeidler. DDT's insecticidal action was discovered by the Swiss chemist Paul Hermann Müller in 1939. DDT was used in the second half of World War II to limit the spread of the insect-borne diseases malaria and typhus among civilians and troops.
