長壽湖(hu)又名(ming)九(jiu)(jiu)號泡(pao)(pao)子,是一處天(tian)然(ran)湖(hu)泊。位(wei)于內(nei)蒙古自治(zhi)區(qu)呼倫貝(bei)爾(er)市牙克石市烏(wu)(wu)奴(nu)耳鎮(zhen)東(dong)(dong)南13公(gong)(gong)里處,免渡河二級支流九(jiu)(jiu)號泡(pao)(pao)子河左岸,地理坐(zuo)標為(wei)東(dong)(dong)經121°19′41″,北緯(wei)48°45′14″,海拔826米。湖(hu)面(mian)呈較為(wei)規則的(de)圓(yuan)形,最大寬度400米,面(mian)積(ji)11公(gong)(gong)頃,九(jiu)(jiu)號泡(pao)(pao)子河貫通湖(hu)泊,東(dong)(dong)進北出,可調節(jie)湖(hu)中水量。內(nei)蒙古烏(wu)(wu)奴(nu)耳長壽湖(hu)國(guo)家濕地公(gong)(gong)園(試點)位(wei)于內(nei)蒙古自治(zhi)區(qu)呼倫貝(bei)爾(er)市烏(wu)(wu)奴(nu)耳林業局,總面(mian)積(ji)8546公(gong)(gong)頃。