Rianila River

{{short description|River in Madagascar}}

{{Infobox river

| name = Rianila River

| name_native =

| name_native_lang =

| name_other =

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| image =

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| map = Rijeka-Rianila.png

| map_size =

| map_caption = Map of Malagasy rivers.

| pushpin_map =

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| subdivision_type1 = Country

| subdivision_name1 = Madagascar

| subdivision_type2 =

| subdivision_name2 =

| subdivision_type3 = Region

| subdivision_name3 = Atsinanana

| subdivision_type4 =

| subdivision_name4 =

| subdivision_type5 = City

| subdivision_name5 = Brickaville

| length = {{convert|134|km|mi|abbr=on}}

| width_min =

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| discharge1_location= Near mouth

| discharge1_min =

| discharge1_avg = (Period: 1971–2000){{cvt|325.2|m3/s|cuft/s|abbr=on}}{{cite web|url=https://www.riversnetwork.org/V1/index.php/component/content/?view=article&id=159&catid=322&Itemid=179|title=Madagascar}}

| discharge1_max =

| source1 =

| source1_location = Fahona Massif

| source1_coordinates=

| source1_elevation = {{convert|1,450|m|abbr=on}}

| mouth =

| mouth_location = Andevoranto, Brickaville, Atsinanana

| mouth_coordinates = {{coord|18|58|35|S|49|06|10|E|display=inline,title}}

| mouth_elevation = {{convert|0|m|abbr=on}}

| progression =

| river_system = Rianila River

| basin_size = {{convert|7,820|km2|abbr=on}}

| tributaries_left =Rongaronga

| tributaries_right = Iaroka, Vohitra,

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}}

Rianila is a river in the Atsinanana region in eastern Madagascar. It flows down from the central highlands to flow into the Indian Ocean south of Brickaville at Andevoranto. Its largest tributary is the Rongaronga, which joins it near Brickaville as well as the Iaroka and Vohitra Rivers.

The river was previously called the Iharoka River by Western explorers (and the Jark River in a few sources).[https://books.google.com/books?id=D7EWAAAAQAAJ&pg=PA18 History of Madagascar], p. 18 (1838) (example of English source, identifying it as the river just south of Andevoranto)

File:BrickavilleFluss1.jpg