Coțatcu

{{for|the village in Buzău County|Podgoria}}

{{Infobox river

| name = Coțatcu

| native_name =

| native_name_lang =

| name_other =

| name_etymology =

| image =

| image_size =

| image_caption =

| pushpin_map = Romania

| subdivision_type1 = Country

| subdivision_name1 = Romania

| subdivision_type2 = Counties

| subdivision_name2 = Buzău, Vrancea

| subdivision_type3 = Villages

| subdivision_name3 = Pleșești, Coțatcu, Voetin, Bălești

| length = {{convert|41|km|abbr=on}}

| width_min =

| width_avg =

| width_max =

| depth_min =

| depth_avg =

| depth_max =

| discharge1_location=

| discharge1_min =

| discharge1_avg =

| discharge1_max =

| source1 = Căpățâna Hill

| source1_location = Buzău County

| source1_coordinates= {{coord|45|31|13|N|26|58|28|E|display=inline}}

| source1_elevation = {{convert|414|m|abbr=on}}

| mouth = Râmnicul Sărat

| mouth_location = Vâjâitoarea

| mouth_coordinates = {{coord|45|29|40|N|27|18|50|E|display=inline,title}}

| mouth_elevation = {{convert|29|m|abbr=on}}

| progression = {{RRâmnicul Sărat}}

| river_system =

| basin_size = {{convert|321|km2|abbr=on}}

| tributaries_left = Cireș, Slimnic

| tributaries_right = Viroaga

| custom_label =

| custom_data =

| extra =

}}

The Coțatcu is a left tributary of the river Râmnicul Sărat in Romania.{{GeoSource|RO|Annex7|980}}{{GeoSource|RO|Atlas|428-429|XII.1.80.9}}Ovidiu Gabor – {{Cite web |url=http://www.riob.org/euro-riob/cracovie/27_sep_2004/costrecoverymechanism.pdf |title=Economic Mechanism in Water Management |access-date=20 February 2008 |archive-url=https://web.archive.org/web/20090305111215/http://www.riob.org/euro-riob/cracovie/27_sep_2004/costrecoverymechanism.pdf |archive-date=5 March 2009 |url-status=dead }}, map page 10 It discharges into the Râmnicul Sărat near Vâjâitoarea. Its length is {{convert|41|km|abbr=on}} and its basin size is {{convert|321|km2|abbr=on}}.{{GeoSource|RO|Atlas|428-429|XII.1.80.9}}