Lock and Dam No. 8

{{Infobox dam

| name = Lock and Dam No. 8

| image = Lock and dam 8 Genoa.jpg

| image_size = 260px

| image_caption = Mississippi River Lock & Dam #8

| location_map = Wisconsin

| name_official =

| dam_crosses = Upper Mississippi River

| res_name = Pool 8

| location = Genoa, Vernon County, Wisconsin / Houston County, Minnesota, United States

| operator = 24px U.S. Army Corps of Engineers, St. Paul District

| dam_length =

| dam_height =

| dam_width_base =

| construction_began = {{Start date and age|1933}}

| opening = April {{Start date and age|1937}}

| res_capacity_total = {{convert|260000|acre feet|km3|abbr=on}}

| res_catchment = {{convert|64770|mi2|km2|abbr=on}}

| res_surface =

| coordinates = {{coord|43|34|12|N|91|13|54|W|type:landmark|display=inline,title}}

| extra =

}}

Lock and Dam No. 8 is a lock and dam located near Genoa, Wisconsin on the Upper Mississippi River near river mile 679.2 in the United States. It was constructed and was put into operation by April 1937. The site underwent major rehabilitation from 1989 to 2003. The lock and dam are owned and operated by the St. Paul District of the United States Army Corps of Engineers-Mississippi Valley Division.

The dam consists of a concrete structure {{convert|934|ft|m|1}} long with five roller gates and 10 tainter gates. The earth embankment is {{convert|17500|ft|m|1}} long with two submersible spillways, {{convert|938|ft|m|1}} long and {{convert|1338|ft|m|1}} long. The lock is {{convert|110|ft|m|1}} wide by {{convert|600|ft|m|1}} long.

File:Genoa lock and dam 01.jpg

File:Lock & dam.jpeg|Lock and Dam No. 8

File:Lock and dam 8 spill way.jpg|Lock and dam 8 spill way

File:Lock & dam 8.png