它地处京、津、冀腹地，总面积366平方公里，水域辽阔，烟波浩淼，势连天际。
B-Location O O B-Location I-Location I-Location O B-Location I-Location I-Location O O O O B-Metric I-Metric I-Metric I-Metric I-Metric I-Metric I-Metric O B-Location I-Location O O O B-Thing I-Thing O O O O O O O O