drainage basin--land area where precipitation runs off into streams, rivers, lakes, and reservoirs. It is a land feature that can be identified by tracing a line along the highest elevations between two areas on a map, often a ridge. Large drainage basins, like the area that drains into the Mississippi River contain thousands of smaller drainage basins. Also called a "watershed."

http://water.usgs.gov/edu/dictionary.html

Pollution of the Ocean by Sewage, Nutrients, and Chemicals - river ...
www.waterencyclopedia.com › Po-Re
Just as inland rivers, lakes, and groundwater can be contaminated by ... Thermal wastes are heated wastewaters, typically from power plants and ... by sewage-related waste is the disposal of biosolids, a semisolid byproduct of ... In coastal watersheds, these wastes can flow through river networks that .... We need to stop.

https://en.wikipedia.org/wiki/Water_pollution
Water pollution is the contamination of water bodies (e.g. lakes, rivers, oceans, aquifers and groundwater). This form of environmental degradation occurs when pollutants are directly or indirectly discharged into water bodies without adequate treatment to remove harmful compounds.
Water pollution affects the entire biosphere – plants and organisms living in these bodies of water. In almost all cases the effect is damaging not only to individual species and population, but also to the natural biological communities.

--------------------------------------------------
Note added at 1 hr (2016-08-03 17:16:10 GMT)
--------------------------------------------------

Academia.edu | Documents in Havza Yönetimi (Watershed ...
www.academia.edu/.../in/Havza_Yönetimi_Watershed_Management...
Havza Yönetimi (Watershed Management). 177 Followers ... su kaynakları yönetiminde bütünsel havza yönetimi. Doğal kaynakların bol olduğu ve ihtiyaçların az ...

--------------------------------------------------
Note added at 1 hr (2016-08-03 17:17:18 GMT)
--------------------------------------------------

Havza morfolojik özelliklerinin belirlenmesinde coğrafi bilgi ...
www.saujs.sakarya.edu.tr/article/viewFile/5000013501/500001...
characteristics of the basin area Corlu Creek watershed were identified and put forward in the field of ... havzası (su toplama havzası, drenaj havzası), akışını bir.

DOĞU ANADOLU SU HAVZASI REHABİLİTASYON PROJESİ ...
www.nadirkitap.com/dogu-anadolu-su-havzasi-rehabilitasyon-p...
DOĞU ANADOLU SU HAVZASI REHABİLİTASYON PROJESİ - EASTERN ANATOLIA WATERSHED REHABILITATION PROJECT kitabı, DOĞU ANADOLU SU ...

Aksu havzası envanteri Inventory of Aksu watershed (PDF Download ...
https://www.researchgate.net/.../281102092_Aksu_havzasi_enva...
This study was carried out between the years 2009-2010 in Aksu watershed that .... Anahtar Kelimeler: Aksu havzası, Havza yönetimi, Katılımcı yaklaşım, Havza ...

--------------------------------------------------
Note added at 4 days (2016-08-08 00:53:59 GMT) Post-grading
--------------------------------------------------

Thank you