Kogin Sammamish

**Kogin Sammamish** (wanda aka fi sani da **Sammamish Slough**) yana gudana da ga arewacin King County, Washington na kimanin kilomita 14 (23 , yana zubar da Tafkin Sammamish zuwa Tafkin Washington. A kan hanyarsa, Kogin Sammamish yana gudana ta Redmond, Woodinville, Bothell, da Kenmore.

An sanya sunan kogin ne bayan 'yan asalin da suka taɓa zama a duk tsawonsa.

## Hanyar da ake ciki
Kogin Sammamish ya fara ne a matsayin hanyar fita a gefen arewacin Tafkin Sammamish, wanda shi ma koguna da yawa ke ciyar da shi waɗanda suka zama tushen ruwa na Kogin Sam Mamish. Mafi mahimmanci daga cikin waɗannan shine Issaquah Creek .

Kogin yana gudana daga arewa daga tafkin ta hanyar birnin Redmond. Kogin Bear Creek ya haɗu da Sammamish daga gabas, kuma yana dauke da ruwa daga Evans Creek da Cottage Lake Creek.

Bayan ya wuce ta Redmond da wasu sassan da ba a haɗa su ba na King County, Sammamish ya shiga Woodinville inda ya juya arewa maso yamma sannan yamma. Little Bear Creek ya haɗu da Sammamish a wannan juyawa na yamma daga arewa. Kogin ya ci gaba da karkata a cikin hanyar yamma, inda ya haɗu daga arewa ta North Creek a Bothell kusa da Jami'ar Washington, da Swamp Creek a Kenmore.

Kogin Sammamish ya shiga Tafkin Washington a gefen yammacin Kenmore.

Kogin Sammamish ya rufe wani yanki daga Everett a arewa zuwa Kwarin Mayu a kudu. Yana daga cikin manyan tafkin Washington-Cedar River. Jimlar yankin da ke cikin tafkin ya rufe kusan 62 km2 (242 mi2), gami da saman Tafkin Sammamish. &nbsp;&nbsp;Big Bear Creek shine mafi girma daga cikin manyan koguna huɗu da ke ciyar da kogin da Little Bear Creek, North Creek, da Swamp Creek suka biyo baya. Har ila yau, akwai adadi mai yawa na magudanar ruwa, da farko daga tuddai da kwari zuwa yammacin kogi.

## Canje-canje na Kogin
Kogin Sammamish na farkon shekarun 1900 an canza shi sosai sakamakon kokarin mutane daban-daban na amfani da tashar don kewayawa, don amfani da ambaliyar ruwa don noma, da kuma rage ambaliyar a kwarin Sammamish River da Tafkin Sammamish. Kafin a haƙa sabon chanel wani lokaci kafin 1936, kogin ya fi faɗi kuma ya fi zurfi kuma gabaɗaya yana gudana a hankali saboda ɗan ƙaramin bambanci a tsawo tsakanin Tafkin Sammamish da Tafkin Washington. Kafin waɗannan gyare-gyare, an san kogin da Squak Slough (bayan an canza furcin ƙauyen Issaquah) kuma ana iya tafiya a duk tsawonsa ta hanyar jiragen ruwa masu zurfi kuma an yi amfani da su don kwantar da katako da jiragen kwal daga Tafkin Sammamish zuwa Tafkin Washington. Bakin kogin ya kasance a gabashin matsayinsa na yanzu.

Kodayake yunkurin inganta ruwa da kewayawa a cikin shekaru da yawa na farko na karni na 20 mai yiwuwa ya shafi nau'in da aikin kogin, manyan gyare-gyare sun faru ne sakamakon ayyukan kewayawa da kula da ambaliyar ruwa guda biyu da aka ba da kuɗin tarayya. Babban canji na farko ya faru ne sakamakon raguwa a matsakaicin matakin da kewayon tsawo na Lake Washington a 1916 a matsayin wani ɓangare na ci gaban Lake Washington Ship Canal da Lock system, wanda aka buɗe a hukumance ranar 16 ga Yuni, 1917. Wannan ya kara bambancin tsawo tsakanin Tafkin Sammamish da Tafkin Washington kuma ya kara yawan kwararar kogin. Har ila yau, ya motsa bakin kogin zuwa yamma.

Babban canji na biyu ya samo asali ne daga tashar King County / ACOE, aikin gyaran da aka kammala a watan Nuwamba 1964 wanda ya haɗa da gina wani weir a Lake Sammamish source. Wannan aikin ya kusan kawar da ambaliyar ruwa a kwarin Kogin Sammamish kuma ya rage matsakaicin ambaliyar ambaliyar da kuma yanayin ruwa a Tafkin Sammamish. An gyara weir a cikin 1998 don inganta hanyar don salmon anadromous a lokacin low flow.

## Tarihin halitta
Kogin Sammamish gida ne ga yawancin salmon da trout, gami da Chinook, coho, sockeye, kokanee, steelhead, da cutthroat trout. Gwamnatin King County a halin yanzu tana aiki a kan maido da mazaunin kifi a gefen kogi.

Yawancin nau'ikan tsuntsaye da dabbobi masu shayarwa suna da yawa a gefen kogi, gami da tsuntsayen ruwa kamar Canada geese, Ducks, da babban blue heron. Har ila yau, gaggafa da beavers suna da kyau a kusa da kogi.

## Wasanni
Hanyar Kogin Sammamish hanya ce ta keke da hanyar tafiya da ke gudana tare da kogi, daga Marymoor Park a Redmond, zuwa Bothell, inda ta haɗu da Burke-Gilman Trail zuwa Seattle. Slough kuma shine babban fasalin ƙasa na tsohon filin wasan golf na Wayne a Bothell .  Kogin kuma gida ne na Sammamish Rowing Association wanda shine wurin yin amfani da jirgin ruwa na al'umma wanda ba shi da riba wanda ya dogara da mallakar King County Parks a Yamma  wanda ke tallafawa nishaɗi da gasa don makarantar sakandare da masu tuka jirgin ruwa. Gidan jirgin ruwa na Sammamish da gidan jirgin ruwa suna Yammacin kogin, tare da tashar jiragen ruwa a gefen Yammacin Kogin, a gaban Marymoor Dog Park.

## Dubi kuma

* Jerin koguna na Washington (jiha) 

## manazarta

## Haɗin waje

* Rashin Ruwa na Sammamish 
* US Geological Survey sunayen tambaya form