earth's surface and river's

{a}The Himalayas or the Himali  pradesh :-

To the northern part of her is 15% of land is covered and occupied by this pradesh.it is stertched 885 km. from east to west.about 5,000mitres of it has snow line fromwhere many snow rivers fold.within himalayan ranges there are other provines. the area above 5,000 miters height is called main himalayan. on this part there is eternity of the existence of snow. the top summit of the world i.e. mt.Everest{8848 miter} and  other mountains like kanchanjunga,kumbhakarna,mhalalgoor,langtang,manasloo,gaurishanker,annapurna,dhawlagiri etc.are within this pradesh. humla, jumla, dolpa,mugu.mustang.manang,namche,walangchunggola are the main place of this pradesh.

{b}pahadee pradesh or mountainous pradesh :-

To the south himali pradesh and to the north opf terai pradesh is called pahadee pradesh.it has occupied nearly 68%of land.it has lofty and shallow mountains,narrow and wide valleys.the mahabharat and choore ranges abr within pahadee pradesh.lofty mountains from 900 miter to 1800miter are found here.kathamandu,pokhara palung tumlingtar and other basins like this are within pahadee pradesh.the middle part of the pradesh is called mahabharat range.this range is extended from east to west beong parallel to the himalayas.this ranges is 16 km wide.the south part of mahabharat rabges is called choore or shivalik ranges. they are low ranges. 

{c}the terai:-

of the three pradesh of nepal, tha southern part these two pradesh is called terai pradesh.it has occupied 17% of the total land of nepal. this part is above 300 miter hight from 23 to 97 km.the plain land of nepal is only terai. its soil is soft.nation's main corn is produced only in this area.the southmost part of nepal is called terai.the foremsot part or head part of the terai is called 'bhawar pradesh'.this pradesh is made of stones,sand and pebbles.the charkose chhadi is within this pradesh.

the area between mahabharat and chure range is called 'doon'or bhitri madesh chitwan,makawanpur,sindhulee,udaypur etc. are called doon whereas janakpur,jaleswore,dhanusha,mahottary,nepalganj etc.are called terai.

2.

{a}koshi pradesh:-

between the area of  kanchanjungha in the east to lamtang in the west is called koshi pradesh.to connenct with the koshi river has seven branch rivers-sunkoshi,tamakoshi,dudhakoshi likhu,arun and tamore. the average of the waterfiow of this river is 1564 cubic miter per-second.

{b}gandaki pradesh:-

the land between lamtang i the east to the dhaulagiri in the west is irrigated by the water of gandaki so its area is called gandaki pradesh.its subordinate rivers are bhudhi gandaki,kali gandaki,marsyangdi,trisuli,seti madi and daraundi.these rivers have water influence over 37845 square km of land.the average current of water is 1713 cubic mitre per-second.

{c}karnali pradesh:-

the land between dhaulagiri in the east and vyasharishi himalaya to the west is called karnali pradesh.humla karnali,mugu karnali,trisuli karnali,bheri,tila,bhudhiganga and seti are its branch river.the influencial.area of the karnali river is the most wide in nepal.its current of waterfiow is 1316 cubic mitre in average per-second.