# Lock and Dam No. 11, United States: what it is and when to go > Lock and Dam No. 11 is a lock and dam on the Mississippi River located between Dubuque, Iowa and rural Grant County, Wisconsin, USA in United States. Interests: History. The best time to visit is March to October. In June there are 15 h 06 of daylight, and in December, 8 h 54. It has articles in 4 Wikipedias, so it is not one of the busiest places in United States: one to enjoy at a calmer pace. Here is what it is, where it lies, when to come, how to get there and what else is nearby to turn it into a trip. - Address: https://kokai.app/en/paises/america/estados-unidos/dam-no-11/ - Reviewed on: 2026-10-08 - Language: en ## In a nutshell - **What it is:** Lock and dam on the Mississippi River located between Dubuque, Iowa and rural Grant County, Wisconsin, USA · History - **Where:** United States - **Best time:** March to October. - **Nearest airport:** ORD Chicago, 234 km as the crow flies - **Run by:** U.S. Army Corps of Engineers, Rock Island District - **Protection:** Protected heritage - **Coordinates:** 42.54082, -90.64246 ## What it is and where Lock and Dam No. 11 is a lock and dam on the Mississippi River located between Dubuque, Iowa and rural Grant County, Wisconsin, USA in United States. It has articles in 4 Wikipedias, so it is not one of the busiest places in United States: one to enjoy at a calmer pace. This portion of the dam extends 1,478 feet northeast in a straight line from the riverward wall of the auxiliary lock. It has 13, 60-foot-wide by 20-foot-high type 2b Tainter gates and three, 109-foot-wide by 20-foot high, 8-foot submersible roller gates. It is in [Dubuque, Iowa](https://kokai.app/en/paises/america/estados-unidos/dubuque/), where this site lists 9 more places to see, 4.8 km from the centre. Its coordinates are 42.54082, -90.64246; the nearest main airport is Chicago O'Hare International Airport (ORD, Chicago), 234 km as the crow flies. How to get around United States (train, car, bus) is covered in [its country guide](https://kokai.app/en/paises/america/estados-unidos/#moverse). - [Where it is](https://www.google.com/maps/search/?api=1&query=42.540815%2C-90.642462) - [Directions](https://www.google.com/maps/dir/?api=1&destination=42.540815%2C-90.642462) - **Run by:** U.S. Army Corps of Engineers, Rock Island District - **Protection:** Protected heritage It is one of the [History](https://kokai.app/en/paises/america/estados-unidos/historia/) places in United States. In [Kokai](https://kokai.app/en/) it is already on your trip map next to the places you save yourself, and it goes into a day's plan with one tap. ## When to go The best time to visit Lock and Dam No. 11 is **March to October**. | Mes | Época | Hours of daylight | | --- | --- | --- | | January | Possible | 9 h 13 | | February | Possible | 10 h 20 | | March | Best time | 11 h 39 | | April | Best time | 13 h 10 | | May | Best time | 14 h 25 | | June | Best time | 15 h 06 | | July | Best time | 14 h 50 | | August | Best time | 13 h 44 | | September | Best time | 12 h 16 | | October | Best time | 10 h 49 | | November | Possible | 9 h 31 | | December | Possible | 8 h 54 | In June there are 15 h 06 of daylight, and in December, 8 h 54. Daylight hours are calculated from the site's latitude for the 15th of each month; when planning a full day on foot they matter as much as the weather. When to go to United States in general, with its festivals and peak seasons, is in [its country guide](https://kokai.app/en/paises/america/estados-unidos/#cuando-ir). ## Before you go to United States To enter United States there are 9 things to sort out before you leave, starting with “Book national parks and cars in advance”: they are all, with their deadlines, in [the United States checklist](https://kokai.app/en/paises/america/estados-unidos/#antes-de-salir). Currency: US dollar (USD); plugs: Type A and B · 120 V · 60 Hz (you need an adapter, and check your devices' voltage); emergencies: 911 for everything. In [Kokai](https://kokai.app/en/) you tick off the checklist inside your trip, and each item reminds you when it is time to do it. ## What is nearby - [Dubuque–Wisconsin Bridge](https://kokai.app/en/paises/america/estados-unidos/dubuque-wisconsin-bridge/): Bridge across Mississippi · 2.9 km - [Dubuque County Jail](https://kokai.app/en/paises/america/estados-unidos/dubuque-county-jail/): Prison in Iowa, United States of America · 4.8 km - [Heitkamp Planetarium](https://kokai.app/en/paises/america/estados-unidos/heitkamp-planetarium/): Planetarium · 5.2 km - [William M. Black](https://kokai.app/en/paises/america/estados-unidos/william-m-black/): Also named after William Murray Black · 5.3 km - [St. Raphael's Cathedral](https://kokai.app/en/paises/america/estados-unidos/saint-raphael-cathedral/): Church in Dubuque, Iowa · 5.5 km Distances are as the crow flies. Everything else is in [the United States guide](https://kokai.app/en/paises/america/estados-unidos/). ## More in United States: History - [Empire State Building](https://kokai.app/en/paises/america/estados-unidos/edificio-empire-state/): skyscraper located in Midtown Manhattan, New York City, USA - [Golden Gate Bridge](https://kokai.app/en/paises/america/estados-unidos/puente-golden-gate/): suspension bridge on the San Francisco Bay - [Yellowstone National Park](https://kokai.app/en/paises/america/estados-unidos/parque-nacional-de-yellowstone/): first national park in the world, located in Wyoming, Montana, and Idaho in the United States - [Mount Rushmore](https://kokai.app/en/paises/america/estados-unidos/mount-rushmore/): mountain in South Dakota featuring a sculpture of four US presidents - [Central Park](https://kokai.app/en/paises/america/estados-unidos/central-park/): public park at the center of Manhattan in New York City, New York, United States - [Yosemite National Park](https://kokai.app/en/paises/america/estados-unidos/yosemite-national-park-2/): national park in California, United States Every United States place under History, each with its season, is on [its page](https://kokai.app/en/paises/america/estados-unidos/historia/). ## Frequently asked questions ### What is Lock and Dam No. 11? It is a lock and dam on the Mississippi River located between Dubuque, Iowa and rural Grant County, Wisconsin, USA in United States. It has articles in 4 Wikipedias, so it is not one of the busiest places in United States: one to enjoy at a calmer pace. ### When is the best time to visit Lock and Dam No. 11? March to October. In June there are 15 h 06 of daylight, and in December, 8 h 54. ### How do you get to Lock and Dam No. 11? The nearest main airport is Chicago O'Hare International Airport (ORD), 234 km as the crow flies. From there, [directions](https://www.google.com/maps/dir/?api=1&destination=42.540815%2C-90.642462) opens the route on the map, and how to get around United States is explained in [its country guide](https://kokai.app/en/paises/america/estados-unidos/#moverse). ### How do I add it to my trip? With one tap. In Kokai it is already on the United States map, next to the places you save yourself: add it to a day's plan, give it a time and, if you like, get a reminder when you pass nearby. ### What else is around here? Nearby you have [Dubuque–Wisconsin Bridge](https://kokai.app/en/paises/america/estados-unidos/dubuque-wisconsin-bridge/), [Dubuque County Jail](https://kokai.app/en/paises/america/estados-unidos/dubuque-county-jail/), [Heitkamp Planetarium](https://kokai.app/en/paises/america/estados-unidos/heitkamp-planetarium/). The rest is in [the United States guide](https://kokai.app/en/paises/america/estados-unidos/). Data from [OpenStreetMap](https://www.openstreetmap.org/way/1013630331), licensed under the ODbL, and from [Wikidata](https://www.wikidata.org/wiki/Q1631436), CC0. More about Lock and Dam No. 11 on [Wikipedia](https://en.wikipedia.org/wiki/Lock_and_Dam_No._11). Daylight hours are calculated from the latitude. More in [credits](https://kokai.app/en/aviso/#creditos).