Lock a
Its 44 sites are reservable through Recreation.gov. Lock a is a Army Corps of Engineers campground near Cheatham, Tennessee.
Reservable: Recreation.gov

- Army Corps of Engineers
- Managed by
- Some sites
- Hookups
- 40 ft
- Max RV length
Getting a site
- Managed by
- Army Corps of Engineers
- Reservations
- Recreation.gov Book a site
- Fee
- Fee unknown, see agency
Source: recreation.gov, accessed 2026-09-29
Sites and hookups
- Total sites
- 44
- Tent sites
- 7
- Hookups
- Some sites , up to 50 amp
- Max RV length
- 40 ft
- Site driveways
- Back-in
- ✓ Pets allowed
On site: Pets allowed.
Source: recreation.gov, accessed 2026-09-29
Campsites
44 sites; 44 with electric hookups; the longest takes a 40 ft vehicle. Every site below links to its own page on Recreation.gov, where it is booked. Official site list and booking on recreation.gov.
| Book | ||||||||
|---|---|---|---|---|---|---|---|---|
| 02 | LOCK A | Standard electric | 40 ft | Back-in | 50 amp | No | Yes | Book site 02 |
| 03 | LOCK A | Standard electric | 40 ft | Back-in | 50 amp | No | Full | Book site 03 |
| 04 | LOCK A | Standard electric | 20 ft | Back-in | 50 amp | No | Full | Book site 04 |
| 05 | LOCK A | Standard electric | 36 ft | Back-in | 50 amp | No | Yes | Book site 05 |
| 06 | LOCK A | Standard electric | 20 ft | Back-in | 50 amp | No | Full | Book site 06 |
| 07 | LOCK A | Standard electric | 40 ft | Back-in | 50 amp | No | Yes | Book site 07 |
| 08 | LOCK A | Standard electric | 36 ft | Back-in | 50 amp | No | Full | Book site 08 |
| 09 | LOCK A | Standard electric | 28 ft | Back-in | 50 amp | No | Full | Book site 09 |
| 10 | LOCK A | Standard electric | 32 ft | Back-in | 50 amp | No | Full | Book site 10 |
| 11 | LOCK A | Standard electric | 32 ft | Back-in | 50 amp | No | Full | Book site 11 |
| 12 | LOCK A | Standard electric | 28 ft | Back-in | 50 amp | No | Yes | Book site 12 |
| 13 | LOCK A | Standard electric | 24 ft | Back-in | 50 amp | No | Full | Book site 13 |
| 14 | LOCK A | Standard electric | 40 ft | Back-in | 50 amp | No | Yes | Book site 14 |
| 15 | LOCK A | Standard electric | 32 ft | Back-in | 50 amp | No | Yes | Book site 15 |
| 16 | LOCK A | Standard electric | 40 ft | Back-in | 50 amp | No | Yes | Book site 16 |
| 17 | LOCK A | Standard electric | 40 ft | Back-in | 50 amp | No | Yes | Book site 17 |
| 18 | LOCK A | Standard electric | 40 ft | Back-in | 50 amp | No | Yes | Book site 18 |
| 19 | LOCK A | Standard electric | 40 ft | Back-in | 50 amp | No | Yes | Book site 19 |
| 20 | LOCK A | Standard electric | 34 ft | Back-in | 50 amp | No | Yes | Book site 20 |
| 21 | LOCK A | Standard electric | 30 ft | Back-in | 50 amp | No | Yes | Book site 21 |
| 22 | LOCK A | Standard electric | 25 ft | Back-in | 50 amp | No | Yes | Book site 22 |
| 23 | LOCK A | Standard electric | 24 ft | Back-in | 50 amp | No | Yes | Book site 23 |
| 24 | LOCK A | Standard electric | 26 ft | Back-in | 50 amp | No | Yes | Book site 24 |
| 25 | LOCK A | Standard electric | 38 ft | Back-in | 50 amp | No | Yes | Book site 25 |
| 26 | LOCK A | Standard electric | 40 ft | Back-in | 50 amp | No | Yes | Book site 26 |
| 27 | LOCK A | Standard electric | 36 ft | Back-in | 50 amp | No | Yes | Book site 27 |
| 28 | LOCK A | Standard electric | 38 ft | Back-in | 50 amp | No | Yes | Book site 28 |
| 29 | LOCK A | Standard electric | 40 ft | Back-in | 50 amp | No | Yes | Book site 29 |
| 30 | LOCK A | Standard electric | 40 ft | Back-in | 50 amp | No | Yes | Book site 30 |
| 31 | LOCK A | Standard electric | 40 ft | Back-in | 50 amp | No | Yes | Book site 31 |
| 32 | LOCK A | Standard electric | 40 ft | Back-in | 50 amp | No | Yes | Book site 32 |
| 33 | LOCK A | Standard electric | 40 ft | Back-in | 50 amp | No | Yes | Book site 33 |
| 34 | LOCK A | Standard electric | 40 ft | Back-in | 50 amp | No | Yes | Book site 34 |
| 35 | LOCK A | Standard electric | 32 ft | Back-in | 50 amp | No | Yes | Book site 35 |
| 36 | LOCK A | Standard electric | 40 ft | Back-in | 50 amp | No | Yes | Book site 36 |
| 37 | LOCK A | Standard electric | 22 ft | Back-in | 50 amp | No | Yes | Book site 37 |
| 38 | LOCK A | Standard electric | 18 ft | Back-in | 50 amp | No | Yes | Book site 38 |
| 39 | LOCK A | Tent only electric | Not on record | Not on record | 50 amp | No | Yes | Book site 39 |
| 40 | LOCK A | Tent only electric | Not on record | Not on record | 50 amp | No | Yes | Book site 40 |
| 41 | LOCK A | Tent only electric | Not on record | Not on record | 50 amp | No | Yes | Book site 41 |
| 42 | LOCK A | Tent only electric | Not on record | Not on record | 50 amp | No | Yes | Book site 42 |
| 43 | LOCK A | Tent only electric | Not on record | Not on record | 50 amp | No | Not on record | Book site 43 |
| 44 | LOCK A | Tent only electric | Not on record | Not on record | 50 amp | No | Not on record | Book site 44 |
| 45 | LOCK A | Tent only electric | Not on record | Not on record | 50 amp | No | Yes | Book site 45 |
Data source: Recreation.gov , accessed 2026-09-29. Site details are Recreation.gov's own per-site listing and can differ from the campground-wide facts above.
Rules
- Pets
- Allowed
Source: recreation.gov, accessed 2026-09-29
Access and cell service
- Elevation
- 390 ft
36.3158, -87.1869 in Cheatham. Open in OpenStreetMap. Map © OpenStreetMap contributors.
Common questions
Do you need a reservation at Lock a?
Sites at Lock a are reserved through Recreation.gov (https://www.recreation.gov/camping/campgrounds/232627).
How many campsites does Lock a have?
Lock a has 44 campsites, including 7 tent sites.
Does Lock a have RV hookups?
Some sites at Lock a have hookups, up to 50 amp; others do not. The longest rig allowed is 40 feet.
Are there pull-through sites at Lock a?
Recreation.gov lists no pull-through sites at Lock a; 37 sites with a stated driveway are back-in or parallel.
Are dogs allowed at Lock a?
Yes, pets are allowed at Lock a.
Who manages Lock a?
Lock a is managed by the U.S. Army Corps of Engineers.
Around Lock a
- Sites
- Not on record
- Season
- 04-01 to 10-31
- Fee
- Site: $25–$50 per night
Harpeth River Bridge Campground - Sites
- 14
- Season
- Not on record
- Fee
- Not on record
More campgrounds: camping near Cheatham and campgrounds in Cheatham.
Sources
- recreation.gov (name, coordinates, manager, campsites), accessed 2026-09-29
- recreation.gov (name, coordinates, manager, reservationSystem, reservationSystemName, reservationUrl, hookups, electricAmpMax, maxRvLengthFt, drivewayType, petsAllowed, sites, campsites), accessed 2026-09-29
- epqs.nationalmap.gov (elevationFt), accessed 2026-10-01
Photo credits
- Photo 1: Adrien Lamarre, U.S. Army Corps of Engineers, Public domain