KoshiNepal ka 14 anchalon men ek anchalka name hae. Ye anchal Nepal ke 5 vikas kshetron men se Purvanchal vikash kshetra men padta hae.Nepal ki sabse badi nadi Koshi nadi ke name se ii anchalka name Koshi anchal rakha gaya hae. Koshi anchal ko 6 jilon me bibhajan kiya gaya hae.