Holt Lock and Dam

{{Infobox dam

| name = Holt Lock and Dam

| image = USACE Holt Lock and Dam Alabama.jpg

| image_caption = Holt Lock and Dam from the air to the southwest

| name_official = Holt Lock and Dam

| dam_crosses = Black Warrior River

| res_name = Holt Lake

| location =Tuscaloosa County, Alabama, USA

| operator = U.S. Bureau of Reclamation

| dam_length =

| dam_height =

| dam_width_base =

| construction_began =

| opening = 1966

| coordinates = {{coord|33|15|14.5|N|87|26|57.9|W|type:landmark|display=inline,title}}

| extra =

}}

The Holt Lock and Dam is a lock built on the Black Warrior River near Holt, Alabama in Tuscaloosa County. Opening for navigation in 1966, it served as a replacement for a series locks and dams built in the early 20th century.{{Cite web |url=https://tile.loc.gov/storage-services/master/pnp/habshaer/al/al0900/al0919/data/al0919data.pdf |title=Holt Lock and Dam |work=Historic American Engineering Record |publisher=Library of Congress |location=Washington, D.C. |access-date=June 4, 2022}} The lock and dam impounds Holt Lake {{convert|19|mi|km}} upstream to the John Hollis Bankhead Lock and Dam.

The lock is located in the southern bank and has an inside chamber with dimensions of {{convert|110|ft|m}} by {{convert|600|ft|m}}, and having a maximum lift of {{convert|64|ft|m}}. The spillway is controlled by 14 individually operated tainter gates used to control the overall lake level. Located on the northern bank are hydroelectric turbines operated by the Alabama Power Company.{{cite web

|url = http://www.riversofalabama.org/Black%20Warrior/BW_Hydrologic_Modifications.htm

|title = Black Warrior Hydrologic Modifications

|accessdate = 2008-02-12

|author = Rivers of Alabama

|archive-url = https://web.archive.org/web/20110610100649/http://www.riversofalabama.org/Black%20Warrior/BW_Hydrologic_Modifications.htm

|archive-date = 2011-06-10

|url-status = dead

}} The United States Army Corps of Engineers owns the dam facility; Alabama Power owns and operates the generating plant.