Yuan Hav dej, tseem hu ua Yuanshui, yog ib qhov dej ntawm Dongting Lake hauv Yangtze River Basin. Nws ntws thoob Tuam Tshoj' s Guizhou xeev thiab Hunan xeev. Yuanjiang yog tus dej thib ob loj tshaj plaws hauv xeev Hunan. Cov dej ntws loj yog 1,033 mais (1,133, 1,022, 1,003 mais), muaj qhov dej ntws ntawm 89,163 square kilometers (1,9,000 square kilometers) thiab 1,462 metres (1,035 meters). ), qhov dej nruab nrab ntawm qhov nruab nrab ntawm lub xyoo yog 2170 cubic meters ib ob, thiab qhov dej ntws txhua xyoo yog 66,8 billion cubic meters (65.9 billion cubic meters raws li lwm cov ntaub ntawv). Lub phiab dav rau plaub lub xeev ntawm Guizhou, Sichuan, Hunan thiab Hubei. Nws yog qhov dej hauv qhov dej loj thib ob hauv plaub lub dej ntawm Dongting Lake, Xiang, Zi, Yuan thiab Li.
Yuanjiang River Phiab muaj 63 lub nroog (nroog, thaj chaw) hauv xeev Guizhou, xeev Hunan, xeev Hubei thiab Nroog Chongqing. Feem ntau ntawm Yuanjiang Dej Phiab yog qhov chaw txom nyem tsis muaj toj roob hauv pes, qhov twg cov haiv neeg tsawg raug faib tawm ntau thiab theem ntawm kev ua nroog loj feem ntau qis. Tshwj tsis yog Changde City hauv thaj chaw Weilu ntawm qhov chaw qis dua ntawm Yuanjiang River, uas yog koom nrog kev sib xyaw ntawm" 3-5" kev lag luam hauv nroog nyob rau hauv xeev Hunan thiab muaj kev lag luam nyob rau theem siab, feem ntau ntawm lwm thaj chaw yog thaj chaw tsis zoo hauv cheeb tsam, nrog 11 khub ntawm kev lag luam txhim kho nyob rau tom qab.
Yuanjiang Hav Dej Phiab yog nplua nuj nyob hauv kev tsim kho hydropower. Raws li lub hom phiaj xyoo 2013 ntawm Hunan Lub Chaw Saib Xyuas Kev Txuag Dej Hauv Ib Cheeb Tsam, cov dej ntws loj ntawm Yuanjiang tau npaj tsim nyob rau ntawm 25 theem, nrog tag nrho cov peev txheej nruab nrab ntawm 5,19.34MW, thiab nruab nrab txhua xyoo kev tsim hluav taws xob ntawm 18.137 billion kW · H. Muaj ntau txog cov dej num tsis txawv dej li qub. Thaum Lub Kaum Hli 16, 2019, thawj qhov kev hla dej ntawm cov ntug dej Yuanjiang tau ua tiav thiab qhib rau tsheb khiav mus los hauv Changde City, Hunan xeev. Ib ntawm lub hauv paus hauv nroog hauv Dongting Lake Phiab, Nroog Changde, Hunan Xeev nkag mus rau lub sijhawm tshiab ntawm" hauv qab dej hla" los ntawm" hla dej hla" ;.