Redwood River

{{Use American English|date=February 2025}} {{Infobox river | name = Redwood River | native_name = | native_name_lang = | name_other = | name_etymology =  | image = Redwood River Camden.jpg | image_caption = The Redwood River in Camden State Park in 2007 | map = Redwoodmnrivermap.png | map_size = 225 | map_caption = | pushpin_map = | pushpin_map_size = 225 | pushpin_map_caption =  | subdivision_type1 = Country | subdivision_name1 = United States | subdivision_type2 = State | subdivision_name2 = Minnesota | subdivision_type3 = | subdivision_name3 = | subdivision_type4 = | subdivision_name4 = | subdivision_type5 = | subdivision_name5 =  | length = {{convert|127.1|mi|km|abbr=on}}<ref name=MSU>{{cite web |url= http://mrbdc.mnsu.edu/major/redwood/desc27.html |title= Redwood River Major Watershed. |pages= [http://mrbdc.mnsu.edu/major/redwood/descstream27.html Streams within the Redwood River Major Watershed] |publisher= Minnesota River Basin Data Center. Minnesota State University, Mankato |date= 2000-06-06 |accessdate= 2007-06-03}}</ref> | width_min = | width_avg = | width_max = | depth_min = | depth_avg = | depth_max = | discharge1_location = near Redwood Falls<ref name=USGSr>{{cite web |url=https://pubs.usgs.gov/wdr/2005/wdr-mn-05-1/ |pages = [https://pubs.usgs.gov/wdr/2005/wdr-mn-05-1/05316500.2005.sw.pdf Redwood River near Redwood Falls, MN] |title=Water Resources Data in Minnesota, Water Year 2005 Annual Report. |first= G. B. |last=Mitton |author2=K. G. Guttormson |author3=G. W. Stratton |author4=E. S. Wakeman |publisher=United States Geological Survey |accessdate=2007-06-03}}</ref> | discharge1_min = {{convert|0|cuft/s|m3/s|abbr=on}} | discharge1_avg = {{convert|153|cuft/s|m3/s|abbr=on}}<ref name=USGSr>{{cite web |url=https://pubs.usgs.gov/wdr/2005/wdr-mn-05-1/ |pages = [https://pubs.usgs.gov/wdr/2005/wdr-mn-05-1/05316500.2005.sw.pdf Redwood River near Redwood Falls, MN] |title=Water Resources Data in Minnesota, Water Year 2005 Annual Report. |first= G. B. |last=Mitton |author2=K. G. Guttormson |author3=G. W. Stratton |author4=E. S. Wakeman |publisher=United States Geological Survey |accessdate=2007-06-03}}</ref> | discharge1_max = {{convert|19700|cuft/s|m3/s|abbr=on}} | discharge2_location = near Marshall<ref name=USGSm/> | discharge2_min = | discharge2_avg = {{convert|69.5|cuft/s|m3/s|abbr=on}}<ref name=USGSm/> | discharge2_max =  | source1 = | source1_location = Aetna Township, Pipestone County | source1_coordinates = {{coord|44|10|03|N|96|10|18|W|display=inline}}<ref name=GNIS>{{cite web |url={{Gnis3|658010}} | title = Geographic Names Information System entry for Redwood River (Feature ID #658010) | publisher = Geographic Names Information System | accessdate = 2007-06-03}}</ref> | source1_elevation = {{convert|1909|ft|abbr=on}}<ref name=GE>Google Earth elevation for GNIS coordinates. Retrieved on 2007-06-03.</ref> | mouth = Minnesota River | mouth_location = near Redwood Falls, Redwood County | mouth_coordinates = {{coord|44|34|16|N|95|05|18|W|display=inline,title}}<ref name=GNIS/> | mouth_elevation = {{convert|827|ft|abbr=on}}<ref name=GE/> | progression = | river_system = | basin_size = {{convert|705|sqmi|abbr=on}}<ref>{{cite web |url= http://mrbdc.mnsu.edu/major/redwood/desc27.html |title= Redwood River Major Watershed. |pages= [http://mrbdc.mnsu.edu/major/cottonwd/descgen29.html General Description] |publisher= Minnesota River Basin Data Center. Minnesota State University, Mankato |date= 2000-06-06 |accessdate= 2007-06-03}}</ref> | tributaries_left = | tributaries_right = | custom_label = | custom_data = | extra = }} The '''Redwood River''' is a tributary of the Minnesota River, {{convert|127|mi|km}} long, in southwestern Minnesota in the United States. Via the Minnesota River, it is part of the watershed of the Mississippi River, draining an area of {{convert|705|mi2|km2}} in an agricultural region. The river's name is believed to refer to the reddish bark of dogwood growing along streams in the region.<ref name=Waters>{{cite book |last= Waters |first= Thomas F. |title= The Streams and Rivers of Minnesota |year= 2006 |publisher= University of Minnesota Press |location= Minneapolis |isbn= 0-8166-0960-8 |pages= [https://archive.org/details/streamsriversofm0000wate/page/288 288–303] |chapter= The Southwest: Rivers of the Coteau des Prairies |url= https://archive.org/details/streamsriversofm0000wate/page/288 }}</ref>

==Course== [[File:Redwood River Flooding at Ramsey Park.jpg|thumb|High water level at Alexander Ramsey Park near Redwood Falls]]. The headwaters of the Redwood River are in Aetna Township in northeastern Pipestone County, approximately {{convert|4|mi|km|spell=in}} west of Ruthton, on the Coteau des Prairies, a morainic plateau dividing the Mississippi and Missouri River watersheds. It flows initially eastwardly as an intermittent stream, through Ruthton and into northwestern Murray County, then northwardly into Lyon County, where it turns northeastward and flows through Russell, Lynd, and Marshall. Between Russell and Marshall, the river flows off the Coteau in a wooded valley, dropping {{convert|300|ft|m}} in {{convert|15|mi|km}}; Camden State Park is located along this stretch of the river.

Downstream of Marshall, the Redwood flows through a flat till plain and turns eastward into Redwood County, passing Vesta and Seaforth; sections of the river in this stretch have been straightened to form agricultural ditches. In Redwood Falls, the county seat of Redwood County, the river enters the wooded valley of the Minnesota River, falling {{convert|100|ft|m}} in {{convert|1|mi|km|spell=in}} over granite ledges in Alexander Ramsey City Park. It flows into the Minnesota shortly downstream of the city.

A dam forming Redwood Lake in Redwood Falls was formerly used for hydroelectricity generation. It is presently maintained to preserve the lake for recreational use.<ref name=Waters/><ref name=DeLorme>{{cite book| title= Minnesota Atlas & Gazetteer |year=1994 |publisher= DeLorme |location=Yarmouth, Me. |isbn= 0-89933-222-6 |pages= 28–30}}</ref><ref name=MPCA>{{cite web |url= http://www.pca.state.mn.us/water/basins/mnriver/watersheds.html |title= Watersheds of the Minnesota River Basin. |pages= [http://www.pca.state.mn.us/water/basins/mnriver/watershed-redwood.pdf Minnesota River Basin: Redwood River Watershed] |publisher= Minnesota Pollution Control Agency |date= 2005-12-01 |accessdate= 2007-06-03 |url-status= dead |archiveurl= https://web.archive.org/web/20070205024044/http://www.pca.state.mn.us/water/basins/mnriver/watersheds.html |archivedate= 2007-02-05 }}</ref>

Principal tributaries of the Redwood River include Coon Creek, {{convert|37|mi|km}} long, which flows from Lake Benton in Lincoln County westwardly to Russell in Lyon County; Three Mile Creek, {{convert|50|mi|km}} long, which rises in Lincoln County and flows northeastwardly and southeastwardly through Lyon County, joining the Redwood downstream of Marshall; and Ramsey Creek, {{convert|10|mi|km}} long, which flows over a waterfall in Ramsey City Park in Redwood Falls.<ref name=MSU/><ref name=MPCA/><ref name=DeLorme/>

Approximately 82% of the land in the Redwood River watershed is used for agriculture, primarily for the cultivation of corn and soybeans. Hundreds of miles of streams in the watershed have been converted to agricultural ditches, disrupting habitat and reducing the ability of the land to absorb flooding.<ref name=MPCA/>

==Flow rate== At the United States Geological Survey's stream gauge near Redwood Falls, {{convert|8.5|mi|km}} upstream from the river's mouth, the annual mean flow of the river between 1909 and 2005 was 153 cubic feet per second (4 m³/s). The highest recorded flow during the period was 19,700 ft³/s (558 m³/s) on June 18, 1957. Readings of zero were recorded on numerous days in 1940 and 1959.<ref name=USGSr/>

At an upstream gauge near Marshall, the annual mean flow between 1940 and 2005 was 69.5 ft³/s (2 m³/s). The highest recorded flow during the period was 6,380 ft³/s (181 m³/s) on May 9, 1993. Readings of zero were recorded on numerous days during several years.<ref name=USGSm>{{cite web |url=https://pubs.usgs.gov/wdr/2005/wdr-mn-05-1/ |pages = [https://pubs.usgs.gov/wdr/2005/wdr-mn-05-1/05315000.2005.sw.pdf Redwood River near Marshall, MN] |title=Water Resources Data in Minnesota, Water Year 2005 Annual Report. |first= G. B. |last=Mitton |author2=K. G. Guttormson |author3=G. W. Stratton |author4=E. S. Wakeman |publisher=United States Geological Survey |accessdate=2007-06-03}}</ref>

==References== {{reflist|2}}

==External links== *{{commons category-inline|Redwood River}}

Category:Rivers of Minnesota Category:Tributaries of the Minnesota River Category:Rivers of Lyon County, Minnesota Category:Rivers of Murray County, Minnesota Category:Rivers of Pipestone County, Minnesota Category:Rivers of Redwood County, Minnesota Category:Minnesota placenames of Native American origin