34.2446578, -91.8992906

Lock and Dam Number 4 Boat Ramp

Fee not yet verified Status not yet verified Public access Updated Oct 7, 2026
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Lock and Dam Number 4 Boat Ramp is a public launch on Arkansas River in Jefferson County, Arkansas . We currently track 9 public launch sites on this waterbody.

The nearest community is Altheimer, about 5.9 miles away. The closest larger city is Little Rock, approximately 41.2 miles away. The site lies within the Plum Bayou-Arkansas River watershed, as defined by the EPA, with its latest assessment summarized below.

Sourced from Arkansas Highway and Transportation Department . See the freshness details in the sidebar.

Boat ramps on Arkansas River

We currently track 9 public boat ramps on Arkansas River , including this one. The other public launch sites on this waterbody are listed below, starting with the closest.

Nearby boat ramps in Jefferson County

We currently track 11 public boat ramps in Jefferson County. The closest ramps are listed below, along with the waterbody each one provides access to.

Frequently asked questions

We haven't confirmed the current launch fee with the managing agency yet - check the fee badge at the top of this page, which updates as soon as we do.

We don't yet have a confirmed parking count for this location from the managing agency.

This ramp's access type isn't specifically flagged for hand-launched craft, but a trailer ramp can generally be used to launch a kayak or canoe by hand as well.

Lock and Dam Number 4 Boat Ramp provides access to Arkansas River, one of 9 public launch sites we track on it.

This listing is sourced from Arkansas Highway and Transportation Department records.

This listing was last checked against the source on July 11, 2026. The page content itself was last updated on October 7, 2026.

Quick facts

County
Jefferson County, Arkansas
Nearby places
Altheimer (5.9 mi)
Pine Bluff (6.0 mi)
Wabbaseka (10.0 mi)
Coordinates
34.2446578, -91.8992906 Gaia
Waterbody
Arkansas River
Access type
Public

Current weather

68°F Mostly Clear

Wind S 3 mph

Full NWS forecast · via National Weather Service
Last updated Oct 13, 2026 at 11:53 AM

Water quality

35%
Good
0%
Impaired
0%
Unassessed

Full EPA report · via EPA ATTAINS
Last updated Jul 12, 2026

Open in Gaia GPS Report incorrect info

Data freshness

How current this listing is, and how it's been maintained.

Last checked against source
July 11, 2026
Page content updated
October 7, 2026
Listed on Boat Ramp US since
October 7, 2026