Rafin Somer

Kogin ya tashi a Chilcompton kuma yana gudana zuwa Midsomer Norton inda ya haɗu da Wellow Brook, wanda ke gudana ta Wellow kuma ya haɗu le Cam Brook a Midford don samar da Midford Brook kafin ya haɗu við Kogin Avon kusa da Dundas Aqueduct da ragowar Somerset Coal Canal.

 Sunan Midsomer, ambaliyar ruwa da hanyoyi masu tsananin gaske 
Akwai muhawara game da asalin sunan "Midsomer".  Mazhabobin tunani daban-daban sun hada da wahalar tafiya zuwa yankin a lokutan ambaliya sabanin matsayin garin a reshen kogin Somer.  Eilert Ekwall ya rubuta cewa ƙauyen "an ce ana kiransa da sunan bikin da aka yi a tsakiyar bazara a ranar St.  John Wesley ya rubuta game da mummunan yanayin hanya na gida wanda ya tabbatar da cewa ana iya isa ga "a tsakiyar lokacin rani kawai."  Kamar yadda Simon Winchester ya lura a cikin littafinsa The Map that Changed the World, “...hanyoyin da ke wannan yanki na Somerset sun kasance mugu, masu kauri da laka kuma sun yi kauri kamar saman wata”.

 Gudanar da ambaliyar ruwa da ingancin ruwa 
A cikin 1974 da 1975 an gina ramin Midsomer Norton Flood Alleviation wanda ke dauke da ruwa daga tsakiyar gari a lokutan ruwan sama mai yawa.

Damuwa game da yanayin kogin da kuma yiwuwar ambaliyar ruwa ya haifar da kirkirar ƙungiyar gudanarwa ta cikin gida a cikin 2007. Sun yi aiki tare da majalisar Bath da North East Somerset da sauran masu ruwa da tsaki a cikin yankin Riparian don inganta kwararar da bayyanar kogin. Wannan ya haɗa da cire weirs, gina sabon tashar, cire silt daga gadon kogi da ƙirƙirar gadaje don shuke-shuke a gefen kogi.

Bincike bayan aikin binciken ya kalli tasirin da ke faruwa a kan muhalli da namun daji. An ga ci gaba ga kifi, invertebrates na ruwa, tsuntsaye, dabbobi masu shayarwa (watakila ciki har da otters) da ƙudan zuma da invertebrates. Ana kimanta ingancin ruwa a matsayin matsakaici dangane da muhalli da kyau dangane da gurɓataccen sinadarai,  wanda shine ingantaccen da aka yi akan ma'aunin da aka yi a cikin 1996.