Ider River

{{Short description|River in Mongolia}}

{{Use dmy dates|date=December 2017}}

{{Infobox river

| name = Ider River

| native_name ={{native name|mn|Идэр гол}}

| name_other = Ider gol

| name_etymology = {{langx|mn|Ider}}, "young, youthful")

| image = IderiinGol.JPG

| image_size =

| image_caption = Ider River near Jargalant, Khövsgöl

| map =

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| mapframe = yes

| mapframe-zoom = 6

| subdivision_type1 = Country

| subdivision_name1 = Mongolia

| subdivision_type2 = Aimags

| subdivision_name2 = Zavkhan, Khövsgöl

| subdivision_type3 =

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| length_km = 452

| width_min =

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| discharge1_avg = {{convert|57|m3/s|cuft/s|abbr=on}}

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| source1 =

| source1_location = Khangai Mountains

| source1_coordinates= {{coord|47|54|47|N|97|57|1|E|}} (approximately)

| source1_elevation = 2850 m (approximately)

| mouth = Selenge

| mouth_location = Olon golyn bilchir

| mouth_coordinates = {{coord|49|15|40|N|100|40|45|E|display=inline,title}}

| mouth_elevation =

| progression = {{RSelenga}}

| river_system =

| basin_size_km2 = 24555

| tributaries_left =

| tributaries_right = Chuluut River

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The Ider River ({{langx|mn|Идэр гол}}, {{translit|mn|Ider gol}}, or {{lang|mn|Идэрийн гол}}, {{translit|mn|Ideriyn gol}}, "Young River") is a river in the Khövsgöl and Zavkhan aimags in northwestern Mongolia and is, together with the Delger mörön river, one of the sources of the Selenga river. It is {{convert|452|km}} long, and has a drainage basin of {{convert|24600|km2}}.[http://bse.sci-lib.com/article050759.html Идэр], Great Soviet Encyclopedia The source is in the Khangai range, the confluence with the Delgermörön is in Tömörbulag. The river is frozen 170–180 nights per year. There is a wooden bridge, which was built in 1940, near Jargalant and a concrete bridge in Galt.Image:JargalantBridge2.jpg