Rashin ruwa na Bartlett

Bartlett Dam,  wani madatsar ruwa ne mai yawa a kan Kogin Verde, wanda ke da nisan kilomita 50 a arewa maso gabashin Phoenix, Arizona.  Dam din ya haifar da Tafkin Bartlett kuma ainihin manufarsa ita ce samar da Ruwa na ban ruwa. Ita ce madatsar ruwa ta farko da aka gina a kan Kogin Verde kuma ta farko da Ofishin Jakadancin Amurka ya gina. An gina shi tsakanin shekara ta alif dubu daya da dari tara da talatin da shidda 1936 da shekarar alif dubu daya da dari tara da talatin da tara 1939. An sanya masa suna ne bayan Bill Bartlett, mai binciken gwamnati. An jera shi a cikin National Register of Historic Places a cikin shekarar dubu 2017.

 Tarihi 
Dangane da Babban Mawuyacin hali da raguwar farashin amfanin gona, manoma sun yi gwagwarmaya sosai don gina madatsar ruwa a kan Kogin Verde. A ƙarshe, a cikin 1935, aikin Salt River ya sami amincewa don gina madatsar ruwan Bartlett. Ofishin Jakadancin Amurka ya gina madatsar ruwan tsakanin 1936 da 1939, a cikin jimlar kwanaki 1,000. Bayan kammala, madatsar ruwan ita ce mafi tsayi a duniya a lokacin. 80% na kudade don madatsar ruwan sun bayar da Salt River Project (SRP) da 20% daga Ofishin Harkokin Indiya. Gine-gine a kan madatsar ruwan ya ba da ayyukan da ake buƙata da kuma kula da ambaliyar ruwa a kan kogi. Kodayake ambaliyar ruwa ta dakatar da aikin na ɗan lokaci a watan Fabrairun 1937, ambaliyar a ƙarshe ta ragu tare da gina madatsar ruwan. Babban ambaliyar ruwa na gaba a yankin ba za ta zo ba har sai hunturu na 1965-66.

Saboda damuwa game da tsaro, daga baya aka gyara madatsar ruwan a tsakiyar shekarun 1990 ta Ofishin Amincewa. Da farko a watan Maris na shekara ta 1994, an ɗaga madatsar ruwan   kuma daga baya, an canza hanyar da ta dace don tafiya tare da sabon tsawo. An kuma gina wani hanyar ruwa mai taimako game da 1,500 feet (460  kudu da gefen hagu na madatsar ruwan. Sabuwar hanyar zubar da ruwa ta kunshi tsarin sarrafa kankare da kuma matattarar fuse guda uku wanda aka tsara don lalacewa a takamaiman matakai yayin ambaliyar ruwa. An kammala gyare-gyaren madatsar ruwan a watan Disamba na shekara ta 1996.

 Zane, girma, da kuma adanawa 
The Bartlett dam consists of 10 arches, 9 buttresses, and is flanked by 2 gravity wing dams. Before being modified, the Bartlett Dam was  tall and contained  of concrete. After the mid-1990s modification, the dam is  tall, made of  of concrete, and has a length of . The width of the dam arch's ranges from  at its base and  at its crest.

The reservoir created by the dam, Bartlett Lake, has a  capacity at the normal surface water elevation of . It drains an area of  and has a surface area of . The dam's outlet works have a discharge capacity of . When the reservoir is at the maximum water elevation of , the service spillway has a  capacity while the auxiliary spillway can discharge up to .

 manazarta 

 Haɗin waje 

 SRP Bartlett Dam
 Ofishin Amincewa na Amurka - Bartlett Dam
 Tarihin Injiniyan Amurka (HAER) A'a AZ-25, "Bartlett Dam, Verde River, kusa da Phoenix, Maricopa, AZ"