Wucewar koguna

Wucewar Koguna
Daga Wikipedia, encyclopedia na kyauta Fas ɗin elver ko ƙwanƙwasa wani gyare-gyaren hanyar ruwa ne da aka gina don rage tasirin toshewa, musamman magudanar ruwa, akan hanyoyin ruwa, magudanan ruwa, ramuka, magudanar ruwa, tashoshi da fulawa, akan motsin elvers, kifi da elvers (ƙasassun yara). Masu ninkaya masu ƙarfi, gami da kifin kifi da kifi na teku, suna samun sauƙin wucewa ta sassa da yawa. Duk da haka, an yarda da cewa wasu sifofi suna sa ƙaurawar kifin ya fi wahala a sama.https://en.wikipedia.org/wiki/Elver_pass#cite_note-autogenerated1-1 Kogin Welland Elver Pass a Duddington Gina Hukumar Kula da Muhalli ta Burtaniya tana da jagororihttps://en.wikipedia.org/wiki/Elver_pass#cite_note-autogenerated1-1don ƙirƙira ƙwanƙwasa da elver don yin aiki a cikin magudanar ruwa, ƙofofi & ƙofofi da tsarin sluice. Ana amfani da abubuwa iri-iri misali HDPE da bakin karfe don yin goga da filaye, bututu, bututu, ramukan linzamin kwamfuta, flaps na cat da nau'ikan ƙofofin dabbobi na elver da elver. Eel da elver pass suna bambanta da tsanin kifi wanda kuma ya bambanta da tsani. Ana gina madaidaicin madaidaicin ta hanyar gabatar da matakai ko madaidaiciya. Kowane mataki ko tsaye na tsani na gyale yana katse kwararar ruwa a kowane wuri a cikin tsani. Sabanin haka, wucewar elver da elver sun bambanta ta ko dai yin amfani da bututu wanda ke ƙetare babban magudanar ruwa ko na yanzu da/ko yin amfani da filaye mai ƙyalƙyali wanda ke ba da tsayin tsayin ci gaba da rushewar ruwa.https://en.wikipedia.org/wiki/Elver_pass#cite_note-2.
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