Yanayin yankin Omaha

Yanayin ƙasa na Omaha, Nebraska yana da halin matsayinsa na bakin kogi kusa da Kogin Missouri.  Yanayin yanayin birnin, tare da kusancinsa da kogin shine dalilin sanya Omaha "Kofar Yamma" wanda dubban mazauna suka yi tafiya zuwa yammacin Amurka a cikin karni na 19.  Abubuwan da suka shafi muhalli sun haɗa da fiye da shekaru ɗari na narkewar masana'antu a gefen kogin tare da ci gaba da tasirin ɓarkewar kewayen birni a yammacin birnin.  Yanayin garin yana da zafi.

## Yanayin ƙasa
Omaha tana a 41°15′38′′N 96°0′47′′W / 41.2 96.01306°W / 41.16056; -96.01306. Dangane da Ofishin Ƙididdigar Amurka, birnin yana da jimlar yanki na murabba'in mil 118.9 (307.9 km2).&nbsp;&nbsp;

Da yake a Midwestern Amurka a bakin Kogin Missouri a gabashin Nebraska, Tashar jiragen ruwa ta Omaha ta taimaka wa birnin ya girma a matsayin birni na kasuwanci. Yawancin Omaha an gina su ne a cikin Kwarin Kogin Missouri . Sauran mahimman ruwa a cikin yankin Omaha-Council Bluffs sun haɗa da Lake Manawa, Papillion Creek, Carter Lake, Platte River da Glenn Cunningham Lake.

An canza ƙasar birnin sosai ta hanyar sa hannun ɗan adam, tare da sake fasalin a ko'ina cikin Garin Omaha kuma ya warwatse a duk faɗin birnin. Ƙananan ƙoƙarin sake farfado da ƙasa, tare da madatsar ruwa a sama, sun kawo kadada da yawa tare da Missouri cikin amfani. Yawancin bambance-bambance na halitta a cikin yanayin ƙasa an daidaita su.

Gabashin Omaha yana zaune a kan filin ambaliyar ruwa a yammacin Kogin Missouri. Yankin shine wurin Carter Lake, Tafkin oxbow. Tafkin ya taɓa zama shafin East Omaha Island. A cikin tsakiya na Carter Drive akwai maɓuɓɓugar sulphur da ba a san sunanta ba, kuma tana kudu da Hardwood Creek. Gabashin Omaha ya taɓa zama wurin Florence Lake, wanda ya bushe a wani lokaci a cikin 1920s.

## Yanayin birni
Kamar sauran biranen Yammacin Amurka, an haɓaka Omaha a kan Tsarin grid tare da tsakiyar gari a Kogin Missouri da Dodge Street. Wannan tsinkaye da farko ya kasance kusa da Lone Tree Ferry, abin da Omaha ta motsa don kafawa; a yau gari na gari ya kewaye yankin.

### Makwabta
 
Babban birni da ke rufe yanki mai yawa, Omaha tana da unguwa daban-daban. Yawancin ƙananan unguwanni sun bazu a fadin yankuna daban-daban a cikin manyan yankunan birnin na Downtown Omaha, Midtown Omaha. Yammacin Omaha, Arewa maso Yammacin Omaha, Kudu maso Yamma na Omaha da birane da garuruwan Sarpy County da yawa sun kewaye birnin.

## Yanayi
Ko da yake yana kusa da latitude ɗaya da Rome, Italiya, Omaha, saboda yanayin da yake kusa da tsakiyar Arewacin Amurka da nisa daga manyan jikunan ruwa ko tsaunin tsaunuka, yana da yanayin yanayi mai ɗanɗano (Köppen weather classification Dfa), tare da lokacin zafi da lokacin sanyi.  Matsakaicin matsakaicin Yuli da mafi ƙarancin yanayin zafi shine 87.4 °F (30.8 °C) da 65.9 °F (18.8 °C) bi da bi, tare da matsakaicin zafi da kuma tsawa akai-akai, yawanci tashin hankali da iya haifar da yanayi mai tsanani ko guguwa;  Takwarorinsu na Janairu sune 31.7 °F (-0.2 °C) da 11.6 °F (-11.3 °C), kodayake yanayin zafi na iya faɗuwa ƙasa da 0 °F (-18 °C) cikin sauƙi ko ya tashi sama da 50 °F (10 °C).  Matsakaicin zafin jiki da aka rubuta a cikin birni shine 114 °F (46 °C), mafi ƙarancin -32 °F (-36 °C).  Matsakaicin hazo na shekara shine inci 30.2 (770 mm), yana faɗuwa galibi a cikin watanni masu zafi, yayin da ruwan sanyi ya fi sau da yawa a cikin yanayin saukar dusar ƙanƙara mai ƙarancin ɗanɗano, matsakaicin inci 26.8 (68 cm) kowace kakar..

Omaha ta sami rabonta na bala'o'i ta ruwa da iska. Carter Lake na birnin ya samo asali ne daga ambaliyar ruwa mai yawa wanda ya canza hanyar Kogin Missouri. Babban Ambaliyar ruwa na 1881 ta cika Omaha da Majalisar Bluffs da ruwa kusan wata daya, wanda ya haifar da mutuwar mutane biyu da miliyoyin daloli a cikin lalacewa. Kimanin mutane 1,000 ne ambaliyar ruwa ta kori su a 1943, wanda ya tura Kogin Missouri, Carter Lake, da tsohuwar Florence Lake zuwa gidaje da kasuwanni a duk faɗin East Omaha. Ambaliyar ruwa ta ranar 13 ga Afrilu, 1952, ta haifar da kwashe mutane 40,000 daga Gabashin Omaha da Carter Lake. Shugaba Harry S. Truman da kansa ya ziyarci wurin ambaliyar ruwa a Omaha kuma a hukumance ya ayyana shi yankin bala'i.

Gidajen da yawa a Midtown da North Omaha sun lalace sosai ta hanyar guguwar Easter Sunday ta 1913, wanda ya lalata kasuwanni da unguwa da yawa. Fiye da mutane 200 sun mutu a lokacin taron. Guguwar Omaha ta 1975 ta yanke ta hanyar kilomita 10 na tituna da gidaje, ta haye hanyar da ta fi yawan jama'a a 72nd da Dodge. Mutane uku sun mutu kuma 133 sun ji rauni.&nbsp;

## Damuwa da muhalli
Wani rahoto na shekara ta 2004 mai suna arewa maso gabashin Omaha "daya daga cikin wuraren sharar guba mafi hatsari a cikin al'umma" bayan Hukumar Kare Muhalli ta Amurka (EPA) ya nuna cewa fiye da yara 2,600 a yankin suna da gubar dalma.[1]  A farkon shekara ta 2003, an ayyana wani babban yanki na Gabashin Omaha a matsayin wurin Superfund bayan dubban yadi sun gwada ingancin yawan gurɓataccen gubar dalma sakamakon wata shukar dalma da ke kusa da ta yi aiki sama da ƙarni guda..

## Masifu na halitta
 
A cikin 1877 Tafkin Carter na Omaha an kafa shi ta babban ambaliyar ruwa wanda ya canza hanyar Kogin Missouri.  Babban ambaliya na 1881 ya cika Omaha da Council Bluffs da ruwa kusan wata guda, wanda ya haifar da asarar rayuka biyu da asarar miliyoyin daloli.  Kimanin mutane 1,000 ne ambaliyar ruwa ta raba da muhallansu a cikin 1943, wanda ya tura kogin Missouri, tafkin Carter, da kuma tsohon tafkin Florence zuwa gidajen mutane da kasuwanci a ko'ina cikin Gabashin Omaha.  Ambaliyar ta ranar 13 ga Afrilu, 1952, ta kai ga kwashe mutane 40,000 daga Gabashin Omaha da Tafkin Carter.  Shugaban kasar Harry S. Truman da kansa ya ziyarci wurin da ambaliyar ruwa ta afku a Omaha kuma ya ayyana shi a matsayin wani yanki na bala'i a hukumance.

Gidajen da yawa a tsakiyar Omaha da Arewacin Omaha sun lalace sosai ta hanyar guguwar Easter Sunday ta 1913, wanda ya lalata kasuwanni da unguwa da yawa. Fiye da mutane 200 sun mutu a lokacin taron. Omaha Tornado na 1975 ya wuce kilomita 10 (16  na tituna da gidaje, ya haye hanyar da ta fi yawan jama'a a 72nd & Dodge. Mutane uku sun mutu kuma 133 sun ji rauni. Fiye da gine-gine 4,000 sun lalace kuma 287 sun lalace. Dangane da lalacewa, ita ce guguwa mafi tsada a tarihin Amurka har zuwa wannan ranar, tare da farashin inshora da aka kiyasta har zuwa dala biliyan 1.1 (a cikin dala na 1975).

## Bayani