The Pearse River is a river of the Tasman Region of New Zealand's South Island. It flows east from sources in the Wharepapa / Arthur Range, reaching the Motueka River 20 kilometres southwest of Motueka.^[1]

Pearse River
The Pearse resurgence, where water exits from Nettlebed Cave
Route of the Pearse River.mw-parser-output .locmap .od{position:absolute}.mw-parser-output .locmap .id{position:absolute;line-height:0}.mw-parser-output .locmap .l0{font-size:0;position:absolute}.mw-parser-output .locmap .pv{line-height:110%;position:absolute;text-align:center}.mw-parser-output .locmap .pl{line-height:110%;position:absolute;top:-0.75em;text-align:right}.mw-parser-output .locmap .pr{line-height:110%;position:absolute;top:-0.75em;text-align:left}.mw-parser-output .locmap .pv>div{display:inline;padding:1px}.mw-parser-output .locmap .pl>div{display:inline;padding:1px;float:right}.mw-parser-output .locmap .pr>div{display:inline;padding:1px;float:left}html.skin-theme-clientpref-night .mw-parser-output .od,html.skin-theme-clientpref-night .mw-parser-output .od .pv>div,html.skin-theme-clientpref-night .mw-parser-output .od .pl>div,html.skin-theme-clientpref-night .mw-parser-output .od .pr>div{background:#000;color:#fff}html.skin-theme-clientpref-night .mw-parser-output .locmap{filter:grayscale(0.6)}@media(prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .locmap{filter:grayscale(0.6)}html.skin-theme-clientpref-os .mw-parser-output .od,html.skin-theme-clientpref-os .mw-parser-output .od .pv>div,html.skin-theme-clientpref-os .mw-parser-output .od .pl>div,html.skin-theme-clientpref-os .mw-parser-output .od .pr>div{background:#000;color:#fff}} Mouth of the Pearse River Show map of New Zealand Pearse River (South Island) Show map of South Island
Location
Country	New Zealand
Physical characteristics
Source
• location	Confluence of Eyles Creek and Whisky Creek
• coordinates	41°12′40″S 172°44′26″E / 41.21102°S 172.74063°E / -41.21102; 172.74063
Mouth
• location	Motueka River
• coordinates	41°13′54″S 172°48′48″E / 41.23173°S 172.81325°E / -41.23173; 172.81325
Length	13 kilometres (8.1 mi)
Basin features
Progression	Pearse River → Motueka River → Tasman Bay → Tasman Sea
Tributaries
• left	Sugar Loaf Creek
• right	Field Creek, Goat Creek, Granity Creek

The source is a resurgence near the Nettlebed Cave. The resurgence has been dived to a depth of 245 metres^[2] and a diver had died in one attempt. At least three undescribed species have been found by divers in the resurgence.^[3]