Editing Main (river) (section)

==Navigation==
The Main is navigable for shipping from its mouth at the Rhine close to Mainz for {{cvt|396|km|mi}} to [[Bamberg]]. Since 1992, the Main has been connected to the Danube via the [[Rhine-Main-Danube Canal]] and the highly regulated [[Altmühl]] river. The Main has been canalized with 34 large locks ({{cvt|300|xx|12|m|ft|disp=or}}) to allow [[Classification of European Inland Waterways|CEMT class]] V vessels ({{cvt|110|xx|11.45|m|ft|disp=or}}) to navigate the total length of the river. The 16 locks in the adjacent Rhine-Main-Danube Canal and the Danube itself are of the same dimensions.{{Citation Needed|date=July 2020}}

=== Weirs and locks ===
[[File:Verlaufskarte Main.gif|thumb|Dams along the Main]]
There are 34 weirs and locks along the 380&nbsp;km navigable portion of the Main, from the confluence with the Regnitz near Bamberg, to the Rhine.<ref name="wsd">{{cite web |url= http://www.wsd-sued.wsv.de/wasserstrassen/bundeswasserstrassen/daten_und_fakten/index.html |title= Daten und Fakten |date= June 2003 |publisher= Wasser- und Schifffahrtsdirektion Süd |access-date= 7 June 2009 |language= de |trans-title= Facts and figures |archive-url= https://web.archive.org/web/20130613103235/http://www.wsd-sued.wsv.de/wasserstrassen/bundeswasserstrassen/daten_und_fakten/index.html |archive-date= 13 June 2013 |url-status= dead }}</ref>

* '''No.:''' Number of the lock (from upstream to downstream).
* '''Name:''' Name of the lock.
* '''Location:''' City or town where the lock is located.
* '''Year built:''' Year when the lock was put into operation (replacement dates are also listed where applicable).
* '''Main-km:''' Location on the Main, measured from the 0&nbsp;km stone in Mainz-Kostheim. The reference point is the center of the lock or lock group.
* '''Distance between locks:''' length in km of impoundment (between adjacent locks).
* '''Altitude:''' Height in meters above mean sea level of the upper water at normal levels.
* '''Height:''' Height of the dam in meters (the height of the Kostheim lock depends on the water level of the Rhine).
* '''Lock length:''' Usable length of the lock chamber in meters.
* '''Lock width:''' Usable width of the lock chamber in meters.

{| class="wikitable sortable"
! No.
! Name
! Location
! Year built
! Main-km
! Distance between locks (km)
! Altitude (m)
! Height (m)
! Lock length (m)
! Lock width (m)
|-
| align="center"| 1 || Viereth || [[Viereth-Trunstadt]] || align="center"| 1925 || align="right"| 380.699 || align="right"|  || align="right"| 230.86 || align="right"| 6.00 || align="right"| 289.80 || align="right"| 12.00
|-
| align="center"| 2 || Limbach || [[Eltmann]] || align="center"| 1951 || align="right"| 367.176 || align="right"| {{nts|13.523}} || align="right"| 224.86 || align="right"| 5.36 || align="right"| 299.10 || align="right"| 12.00
|-
| align="center"| 3 || Knetzgau || [[Knetzgau]] ([[Haßfurt]]) || align="center"| 1958 || align="right"| 359.781 || align="right"| {{nts|7.395}} || align="right"| 219.50 || align="right"| 4.24 || align="right"| 298.85 || align="right"| 12.00
|-
| align="center"| 4 || Ottendorf || [[Gädheim]] || align="center"| 1962 || align="right"| 345.263 || align="right"| {{nts|14.518}} || align="right"| 215.26 || align="right"| 7.59 || align="right"| 301.60 || align="right"| 12.00
|-
| align="center"| 5 || Schweinfurt || [[Schweinfurt]] || align="center"| 1963 || align="right"| 332.037 || align="right"| {{nts|13.226}} || align="right"| 207.67 || align="right"| 4.67 || align="right"| 300.60 || align="right"| 12.00
|-
| align="center"| 6 || Garstadt || [[Bergrheinfeld]] || align="center"| 1956 || align="right"| 323.503 || align="right"| {{nts|8.534}} || align="right"| 203.00 || align="right"| 4.69 || align="right"| 299.75 || align="right"| 12.00
|-
| align="center"| 7 || Wipfeld || [[Wipfeld]] || align="center"| 1950 || align="right"| 316.289 || align="right"| {{nts|7.214}} || align="right"| 198.31 || align="right"| 4.31 || align="right"| 300.15 || align="right"| 12.00
|-
| align="center"| 8 || Gerlachshausen mit Volkach || [[Volkach]] ([[Schwarzach am Main]]) || align="center"| 1957 || align="right"| 300.506 || align="right"| {{nts|15.783}} || align="right"| 194.00 || align="right"| 6.30 || align="right"| 300.00 || align="right"| 12.00
|-
| align="center"| 9 || Dettelbach || [[Dettelbach]] || align="center"| 1959 || align="right"| 295.398 || align="right"| {{nts|5.108}} || align="right"| 187.70 || align="right"| 5.50 || align="right"| 299.35 || align="right"| 12.00
|-
| align="center"| 10 || Kitzingen || [[Kitzingen]] || align="center"| 1956 || align="right"| 283.979 || align="right"| {{nts|11.419}} || align="right"| 182.20 || align="right"| 3.66 || align="right"| 299.80 || align="right"| 12.00
|-
| align="center"| 11 || Marktbreit || [[Marktbreit]] ([[Frickenhausen am Main]]) || align="center"| 1955 || align="right"| 275.681 || align="right"| {{nts|8.298}} || align="right"| 178.54 || align="right"| 3.31 || align="right"| 296.40 || align="right"| 12.00
|-
| align="center"| 12 || Goßmannsdorf || [[Ochsenfurt]] || align="center"| 1952 || align="right"| 269.028 || align="right"| {{nts|6.653}} || align="right"| 175.23 || align="right"| 3.40 || align="right"| 296.90 || align="right"| 12.00
|-
| align="center"| 13 || Randersacker || [[Würzburg]] ([[Randersacker]]) || align="center"| 1950 || align="right"| 258.885 || align="right"| {{nts|10.143}} || align="right"| 171.83 || align="right"| 3.30 || align="right"| 299.60 || align="right"| 12.00
|-
| align="center"| 14 || Würzburg || [[Würzburg]] || align="center"| 1954 || align="right"| 252.512 || align="right"| {{nts|6.373}} || align="right"| 168.53 || align="right"| 2.75 || align="right"| 293.10 || align="right"| 12.00
|-
| align="center"| 15 || Erlabrunn || [[Erlabrunn]] ([[Thüngersheim]]) || align="center"| 1935 || align="right"| 241.204 || align="right"| {{nts|11.308}} || align="right"| 165.78 || align="right"| 4.15 || align="right"| 299.20 || align="right"| 12.00
|-
| align="center"| 16 || Himmelstadt || [[Himmelstadt]] || align="center"| 1939 || align="right"| 232.290 || align="right"| {{nts|8.914}} || align="right"| 161.63 || align="right"| 4.30 || align="right"| 299.50 || align="right"| 12.00
|-
| align="center"| 17 || Harrbach || [[Karlstadt am Main|Karlstadt]] ([[Gemünden am Main]]) || align="center"| 1939 || align="right"| 219.466 || align="right"| {{nts|12.824}} || align="right"| 157.33 || align="right"| 4.90 || align="right"| 299.45 || align="right"| 12.00
|-
| align="center"| 18 || Steinbach || [[Lohr am Main]] || align="center"| 1939 || align="right"| 200.673 || align="right"| {{nts|18.793}} || align="right"| 152.43 || align="right"| 5.14 || align="right"| 299.10 || align="right"| 12.00
|-
| align="center"| 19 || Rothenfels || [[Rothenfels]] ([[Marktheidenfeld]]) || align="center"| 1937 || align="right"| 185.887 || align="right"| {{nts|14.786}} || align="right"| 147.29 || align="right"| 5.26 || align="right"| 298.45 || align="right"| 12.00
|-
| align="center"| 20 || Lengfurt || [[Triefenstein]] || align="center"| 1937 || align="right"| 174.508 || align="right"| {{nts|11.379}} || align="right"| 142.03 || align="right"| 3.99 || align="right"| 300.08 || align="right"| 11.98
|-
| align="center"| 21 || Eichel || [[Wertheim am Main|Wertheim]] || align="center"| 1937 || align="right"| 160.467 || align="right"| {{nts|14.041}} || align="right"| 138.04 || align="right"| 4.50 || align="right"| 299.92 || align="right"| 12.00
|-
| align="center"| 22 || Faulbach || [[Wertheim am Main|Wertheim]] ([[Faulbach]]) || align="center"| 1935 || align="right"| 147.065 || align="right"| {{nts|13.402}} || align="right"| 133.54 || align="right"| 4.51 || align="right"| 299.80 || align="right"| 12.10
|-
| align="center"| 23 || Freudenberg || [[Collenberg]] ([[Freudenberg (Baden)|Freudenberg]]) || align="center"| 1934 || align="right"| 133.948 || align="right"| {{nts|13.117}} || align="right"| 129.03 || align="right"| 4.51 || align="right"| 300.00 || align="right"| 12.00
|-
| align="center"| 24 || Heubach || [[Großheubach]] ([[Miltenberg]]) || align="center"| 1932 || align="right"| 122.360 || align="right"| {{nts|11.588}} || align="right"| 124.52 || align="right"| 4.00 || align="right"| 300.00 || align="right"| 12.00
|-
| align="center"| 25 || Klingenberg || [[Klingenberg am Main]] || align="center"| 1930 || align="right"| 113.050 || align="right"| {{nts|9.310}} || align="right"| 120.52 || align="right"| 4.00 || align="right"| 300.71 || align="right"| 12.05
|-
| align="center"| 26 || Wallstadt || [[Kleinwallstadt]] ([[Großwallstadt]]) || align="center"| 1930 || align="right"| 101.203 || align="right"| {{nts|11.847}} || align="right"| 116.52 || align="right"| 4.00 || align="right"| 299.93 || align="right"| 12.00
|-
| align="center"| 27 || Obernau || [[Niedernberg]] ([[Aschaffenburg]]) || align="center"| 1930 || align="right"| 92.909 || align="right"| {{nts|8.294}} || align="right"| 112.52 || align="right"| 4.01 || align="right"| 299.18 || align="right"| 12.00
|-
| align="center"| 28 || Kleinostheim || [[Kleinostheim]] ([[Stockstadt am Main]]) || align="center"| 1920<br> 1972 || align="right"| 77.905 || align="right"| {{nts|15.004}} || align="right"| 108.51 || align="right"| 6.80 || align="right"| 298.36<br />298.22 || align="right"| 12.04<br />12.02
|-
| align="center"| 29 || Krotzenburg || [[Hainburg, Germany|Hainburg]] ([[Großkrotzenburg]]) || align="center"| 1920<br>1983 || align="right"| 63.850 || align="right"| {{nts|14.055}} || align="right"| 101.71 || align="right"| 2.74 || align="right"| 302.30<br />300.01 || align="right"| 12.00<br />12.00
|-
| align="center"| 30 || Mühlheim<br> (formerly Kesselstadt) || [[Maintal]] ([[Mühlheim am Main]]) || align="center"| 1920<br>1980 || align="right"| 53.185 || align="right"| {{nts|10.385}} || align="right"| 98.97 || align="right"| 3.77 || align="right"| 299.90 || align="right"| 12.04
|-
| align="center"| 31 || Offenbach || [[Frankfurt am Main]] ([[Offenbach am Main]]) || align="center"| 1901<br>1957 || align="right"| 38.514 || align="right"| {{nts|14.671}} || align="right"| 95.20 || align="right"| 3.18 || align="right"| 344.03<br />230.07 || align="right"| 12.09<br />13.05
|-
| align="center"| 32 || Griesheim || [[Frankfurt am Main]] || align="center"| 1934 || align="right"| 28.687 || align="right"| {{nts|9.827}} || align="right"| 92.02 || align="right"| 4.49 || align="right"| 344.05<br />344.38 || align="right"| 12.00<br />15.00
|-
| align="center"| 33 || Eddersheim || [[Hattersheim am Main]] ([[Kelsterbach]]) || align="center"| 1934 || align="right"| 15.551 || align="right"| {{nts|13.136}} || align="right"| 87.53 || align="right"| 3.61 || align="right"| 345.46<br />344.26 || align="right"| 12.05<br />15.05
|-
| align="center"| 34 || Kostheim  || [[Hochheim am Main]] ([[Ginsheim-Gustavsburg]]) || align="center"| 1886<br>1934 || align="right"| 3.209 || align="right"| {{nts|12.342}} || align="right"| 83.92 || align="right"| <br>2.36<br>(MW Rhine) || align="right"| 341.90<br />339.02 || align="right"| 15.00<br />Door:&nbsp;12.00<br />Chamber:&nbsp;20.00
|}

=== Hydroelectric power generation ===
Most of the weirs or dams along the Main also have turbines for power generation.
* '''No.:''' Number of the dam/weir (from upstream to downstream).
* '''Name:''' Name of the dam/weir.
* '''Height:''' Height of the dam/weir in meters (the height of the Kostheim dam depends on the water level of the Rhine).
* '''Power:''' Maximum power generation capacity in megawatts.
* '''Turbines:''' Type and number of turbines.
* '''Operator:''' Operator of the hydroelectric plant.

{| class="wikitable sortable"
! No.
! Name
! Height (m)
! Power (MW)
! Turbines
! Operator
|-
| align="center"| 1 || Viereth || align="right"| 6.00 || align="right"| 6.20 ||[[Francis turbine|Francis]](3), [[Kaplan turbine|Kaplan]](1) || [[E.ON Wasserkraft]]
|-
| align="center"| 2 || Limbach || align="right"| 5.36 || align="right"| 3.70 ||[[Kaplan turbine|Kaplan]](2) || [[E.ON Wasserkraft]]
|-
| align="center"| 3 || Knetzgau || align="right"| 4.24 || align="right"| 2.90 ||[[Kaplan turbine|Kaplan]](2) || [[E.ON Wasserkraft]]
|-
| align="center"| 4 || Ottendorf || align="right"| 7.59 || align="right"| 6.30 ||[[Kaplan turbine|Kaplan]](2) || [[E.ON Wasserkraft]]
|-
| align="center"| 5 || Schweinfurt || align="right"| 4.67 || align="right"| 3.80 ||[[Kaplan turbine|Kaplan]](2) || [[E.ON Wasserkraft]]
|-
| align="center"| 6 || Garstadt || align="right"| 4.69 || align="right"| 3.90||[[Kaplan turbine|Kaplan]](2) ||  [[E.ON Wasserkraft]]
|-
| align="center"| 7 || Wipfeld || align="right"| 4.31 || align="right"| 2.90||[[Kaplan turbine|Kaplan]](2) ||  [[E.ON Wasserkraft]]
|-
| align="center"| 8 || Gerlachshausen mit Volkach || align="right"| 6.30 || align="right"| 3.90||[[Kaplan turbine|Kaplan]](2) || [[E.ON Wasserkraft]]
|-
| align="center"| 9 || Dettelbach || align="right"| 5.50 || align="right"| 4.20||[[Kaplan turbine|Kaplan]](2)|| [[E.ON Wasserkraft]]
|-
| align="center"| 10 || Kitzingen || align="right"| 3.66 || align="right"| 3.00||[[Kaplan turbine|Kaplan]](2) || [[E.ON Wasserkraft]]
|-
| align="center"| 11 || Marktbreit || align="right"| 3.31 || align="right"| 2.10||[[Kaplan turbine|Kaplan]](2) || [[E.ON Wasserkraft]]
|-
| align="center"| 12 || Goßmannsdorf || align="right"| 3.40 || align="right"| 2.00||[[Kaplan turbine|Kaplan]](2) || [[E.ON Wasserkraft]]
|-
| align="center"| 13 || Randersacker || align="right"| 3.30 || align="right"| 2.00||[[Kaplan turbine|Kaplan]](2) || [[E.ON Wasserkraft]]
|-
| align="center"| 14 || Würzburg || align="right"| 2.75 || align="right"| 0.90||[[Kaplan turbine|Kaplan]](3) || [[E.ON Wasserkraft]]
|-
| align="center"| 15 || Erlabrunn || align="right"| 4.15 || align="right"| 2.70||[[Kaplan turbine|Kaplan]](1) || [[E.ON Wasserkraft]]
|-
| align="center"| 16 || Himmelstadt || align="right"| 4.30 || align="right"| 2.50||[[Kaplan turbine|Kaplan]](1) || [[E.ON Wasserkraft]]
|-
| align="center"| 17 || Harrbach || align="right"| 4.90 || align="right"| 3.00||[[Kaplan turbine|Kaplan]](2) || [[E.ON Wasserkraft]]
|-
| align="center"| 18 || Steinbach || align="right"| 5.14 || align="right"| 4.20||[[Kaplan turbine|Kaplan]](2) || [[E.ON Wasserkraft]]
|-
| align="center"| 19 || Rothenfels || align="right"| 5.26 || align="right"| 4.20||[[Kaplan turbine|Kaplan]](2) || [[E.ON Wasserkraft]]
|-
| align="center"| 20 || Lengfurt || align="right"| 3.99 ||  align="right"| 2.60||  || [[E.ON Wasserkraft]]
|-
| align="center"| 21 || Eichel || align="right"| 4.50 ||  align="right"| 3.10||   || [[E.ON Wasserkraft]]
|-
| align="center"| 22 || Faulbach || align="right"| 4.51 || align="right"| 4.10||   || [[E.ON Wasserkraft]]
|-
| align="center"| 23 || Freudenberg || align="right"| 4.51 ||  align="right"| 4.30||  || [[E.ON Wasserkraft]]
|-
| align="center"| 24 || Heubach || align="right"| 4.00 ||  align="right"| 3.40||   || [[E.ON Wasserkraft]]
|-
| align="center"| 25 || Klingenberg || align="right"| 4.00 || align="right"| 3.00||  || [[E.ON Wasserkraft]]
|-
| align="center"| 26 || Wallstadt || align="right"| 4.00 || align="right"| 3.40||  || [[E.ON Wasserkraft]]
|-
| align="center"| 27 || Obernau || align="right"| 4.01 || align="right"| 3.20||   || [[E.ON Wasserkraft]]
|-
| align="center"| 28 || Kleinostheim || align="right"| 6.80 || align="right"| 9.70||  ||  [[E.ON Wasserkraft]]
|-
| align="center"| 29 || Krotzenburg || align="right"| 2.74 || align="right"| {{SortKey|0|—}}||  ||
|-
| align="center"| 30 || Mühlheim || align="right"| 3.77 || align="right"| 4.80||  ||  [[E.ON Wasserkraft]]
|-
| align="center"| 31 || Offenbach || align="right"| 3.18 || align="right"| 4.10|| ||  [[E.ON Wasserkraft]]
|-
| align="center"| 32 || Griesheim || align="right"| 4.49 || align="right"| 4.90|| [[Kaplan turbine|Kaplan]](3) || Wasser- und Schifffahrtsamt Aschaffenburg
|-
| align="center"| 33 || Eddersheim || align="right"| 3.61 || align="right"| 3.84|| [[Kaplan turbine|Kaplan]](3) || Wasser- und Schifffahrtsamt Aschaffenburg
|-
| align="center"| 34 || Kostheim || align="right"| 2.36 || align="right"| 4.9 || Kaplan Pit-Rohrturbinen(2) || WKW Staustufe Kostheim/Main GmbH & Co. KG (Gebaut und Betrieben von [[Stadtwerke Ulm/Neu-Ulm]])
|}