This is an enjoyable 4ish mile loop in the Delaware Water Gap National Recreation Area. It features cascades, streamside hiking, gorge rim, hemlocks, a beautiful lake and wetlands, and waterfalls when the creek is flowing well. It is a hike of great diversity, with many wildflowers, birds, and wildlife, especially near the lake and wetlands. This entire hike follows established trails, some are unblazed. This route is similar to that found on AllTrails, with some modifications.
From the Toms Creek picnic and parking area, walk to the back of the picnic area and pick up the obvious trail as it goes upstream with views of Toms Creek. It is an easy, gradual hike. There are cascades, boulders and pools in the creek. Large trees rise overhead, including tulip poplar and its distinctive blooms which had fallen to the forest floor. This official trail comes to an end at a bench with views of the creek. Now pick up the unblazed trail, which is obvious and goes upstream with more views of the creek and its cascades.
Begin a steep climb up the slope and the trail turns left, following the rim of the gorge with forested views looking down towards the creek. The forest has many hemlocks. Intercept a trail with blue blazes, follow it and cross a small stream. Go uphill. The trail levels off as it nears Landis Lake with many hemlocks and pines.
We lost the blue trail around a blow down. I believe it follows the dotted blue route on the map, but I did not hike that. A better way is to follow an unblazed trail that goes along the shore of the beautiful, serene lake. I felt as if I were in the Adirondacks. Enjoy the scenery, birds, and lilypad blooms. Landis Lake is a place where you’ll want to relax and enjoy. The unblazed trail soon reaches a bridge at the outlet of the lake. Reach an old road.
We turned left on the road to enjoy more views of the lake and many wildflowers. Reach a gate and hike around it, I believe this is now an open road to cars. We saw a large wetland with many dead, standing trees. On top was a heron nest, and a group of herons with the chicks, who looked too large for the nest. The adults flew away, their massive wings flapping, before disappearing over the trees and down to the Delaware River where they feed. It was a great experience to see these incredible birds. We went back to the footbridge at the outlet of Landis Lake.
Now we just followed the old road down, now largely covered by grass and vegetation. Wooden guardrails still accompany the road. We soon came upon a gorge with cascades and falls, some over twenty feet high. The creek was low, but when running well, these falls would be beautiful. The gorge looked deep and rugged, and I’m sure it hides more waterfalls. The old road meandered down the mountain, often under pine trees. We hiked around the gate, turned right on the road, and walked the short distance back to the parking area. Near the parking area, notice the giant European beech tree and its red leaves.
For the map above, brown is the official Toms Creek Trail, red are established but unblazed trails, blue is a blue blazed trail, black are old roads. The blue dotted route may be the AllTrails route near the lake. All routes are established, there is no bushwhacking. Enjoy this beautiful hike.
Parking is at 41.126645, -74.955010.
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Hike Pennsylvania with Jeff Mitchell 
Kindly let me know the distances it takes to hike this loop. Thanks!