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Greensburg to Munfordville. Clear-water floats for smallmouth and Kentucky's native muskie. The river tops out around 15 ft. Bathymetry on this water is estimated from its real outline and maximum depth. Use it to shortlist water, then verify with your electronics — and never navigate by it. The rest of this page walks each species through its year, using the map's own scoring.
Green River (Mammoth Cave) maps at 5,238 acres behind 180.3 miles of shoreline. That shoreline is heavily fingered (development index 17.8) — bays, points and pockets everywhere, which multiplies the fishable edge. Figure 35.6 mi of water from one end to the other, 7 mi at the beam. It sits in Green County. If the bite dies, Metcalfe County Lake is 16 mi to the south.
Come spring, look for smallmouth bass tight to the bank in 3 to 12 ft. They move out to 5 to 15 ft in summer and finish the year down in 5 to 15 ft. If you only fish one area, make it Greensburg riffles: a rock pile around 4 ft that scores prime in spring. Best bite is early morning and the evening. A drop shot (goby/minnow) or a ned rig is the honest summer answer here.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 12 ft | dawn & dusk | Greensburg riffles (4 ft) | Ned rig, Tube jig |
| Summer | 5 to 15 ft | dawn & dusk | Riffle & run (mile 8.1) (5 ft) | Drop shot (goby/minnow), Ned rig |
| Fall | 5 to 15 ft | midday & dawn | Inside bend (mile 41.9) (11 ft) | Jerkbait, Blade bait |
| Winter | 5 to 15 ft | midday | Current seam (mile 6.2) (8 ft) | Blade bait, Hair jig |
When the water first warms, muskellunge slide up into 3 to 12 ft. By summer they slide out to 5 to 15 ft, and by winter most fish are in 5 to 15 ft. If you only fish one area, make it Inside bend (mile 41.9): a point around 11 ft that scores prime in summer. In summer the feeding windows fall in the evening and early morning. Keep a double-10 bucktail or a topwater (walk-the-dog / creeper) rigged through the warm months.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 12 ft | dusk | Tailout eddy (mile 0.3) (8 ft) | Smaller bucktail (#8 blades), 6" glide bait |
| Summer | 5 to 15 ft | dusk & dawn | Inside bend (mile 41.9) (11 ft) | Double-10 bucktail, Topwater (walk-the-dog / creeper) |
| Fall | 4 to 15 ft | midday & dusk | Greensburg riffles (4 ft) | Big rubber (Bull Dawg style), 10"+ glide bait |
| Winter | 5 to 15 ft | midday | Tailout eddy (mile 0.3) (8 ft) | Large rubber, crawled slow |
When the water first warms, channel catfish slide up into 3 to 12 ft. Summer is a 5 to 15 ft game here, winter a 5 to 15 ft one. Start at Outside-bend hole (mile 2.5). It's a creek channel holding about 11 ft of water and rates prime come summer. The feeding windows run after dark and the evening.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 12 ft | dusk | Tailout eddy (mile 0.3) (8 ft) | |
| Summer | 5 to 15 ft | night & dusk | Outside-bend hole (mile 2.5) (11 ft) | |
| Fall | 5 to 15 ft | dusk | Outside-bend hole (mile 2.5) (11 ft) | |
| Winter | 5 to 15 ft | midday | Outside-bend hole (mile 2.5) (11 ft) |
Come spring, look for longnose gar tight to the bank in 2 to 10 ft. Expect a summer slide to 1 to 12 ft, then a winter hold in 5 to 15 ft. Start at Outside-bend hole (mile 2.5). It's a creek channel holding about 11 ft of water and rates prime come fall. Prime time lands in midday and the evening. A rope lure or a small white spinner is the honest summer answer here.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 10 ft | midday | Log-jam muskie pools (9 ft) | Rope lure (hookless nylon), Inline spinner (slow) |
| Summer | 1 to 12 ft | midday & dusk | Log-jam muskie pools (9 ft) | Rope lure, Small white spinner |
| Fall | 4 to 15 ft | midday | Outside-bend hole (mile 2.5) (11 ft) | Rope lure, Small jerkbait (pause-heavy) |
| Winter | 5 to 15 ft | midday | Tailout eddy (mile 0.3) (8 ft) |
The spring pattern is a shallow one: rock bass in 2 to 10 ft. As the season builds they drop to 4 to 15 ft, wintering in 5 to 15 ft. Top water on the chart: Greensburg riffles, a rock pile in the 4 ft range, prime in spring. Time it for the evening. Summer baits: a ned rig (small) or a marabou jig gets it done.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 10 ft | midday & dawn | Greensburg riffles (4 ft) | 1/16 oz jig + grub, Small inline spinner |
| Summer | 4 to 15 ft | dusk | Greensburg riffles (4 ft) | Ned rig (small), Marabou jig |
| Fall | 5 to 15 ft | midday | Riffle & run (mile 8.1) (5 ft) | Small tube jig, Inline spinner |
| Winter | 5 to 15 ft | midday | Riffle & run (mile 8.1) (5 ft) | Tungsten jig + plastic, Small spoon + spike |
The chart marks 36 structure features on Green River (Mammoth Cave); the deepest is Dam tailrace at about 13 ft.
Access data: Kentucky Fish & Wildlife — Fishing Access Sites. Confirm conditions and fees locally before you launch.
Season dates, license requirements, and size and bag limits for Kentucky waters are set by the Kentucky Department of Fish & Wildlife — and special regulations can apply to Green River (Mammoth Cave) specifically, so confirm the current rules before you fish.
Check the official Kentucky fishing regulations →
Green River (Mammoth Cave) is about 15 ft (5 m) deep at its deepest point. The contours here are modeled from the water's real shape and maximum depth, so treat them as a rough guide.
Anglers target smallmouth bass, muskellunge, channel catfish, longnose gar, rock bass on Green River (Mammoth Cave).
Greensburg riffles is the top-rated area: a rock pile in about 4 ft of water that rates prime for smallmouth bass in spring. Open the map above to see every rated spot for each species and season.
For smallmouth bass, the summer bite is best in early morning and the evening. Each species page section below lists the seasonal windows, and the map shows a live NOW badge when you're inside one.
Fishing on Green River (Mammoth Cave) is regulated by the Kentucky Department of Fish & Wildlife. Check the official Kentucky regulations for current license requirements, season dates, and size and bag limits — special regulations can apply to this specific water.
Metcalfe County Lake 16 mi · Green River Lake 22 mi · Nolin River Lake 27 mi · Marion County 29 mi · Barren River Lake 33 mi · Cumberland River Tailwater 38 mi · Mill Creek Lake 41 mi · Rough River Lake 47 mi · Jesse W. Thornton Lake 49 mi · Lake Cumberland 50 mi · Salt River 52 mi · Dale Hollow Lake 53 mi, KY/TN
See how Green River (Mammoth Cave) stacks up: best smallmouth bass lakes in Kentucky · best channel catfish lakes in Kentucky · best muskellunge lakes in Kentucky · best longnose gar lakes in Kentucky
Browse all Kentucky fishing maps or see every water on DepthScout. How we build these maps. Fish here with a sonar unit that logs? Send us your depth data and we'll improve this chart, credited to you. For fishing guidance only, never navigation.