The lowermost 7.5-mile-long section of Wiscoy Creek flows through Allegany County, extending from the Wyoming County/Allegany County line to the junction with the Genesee River about 0.7 miles downstream of the crossing at Route 19A in Rossburg. As with nearly the entire length of the Wiscoy, this section of the stream is managed as a wild trout fishery and special regulations apply. The only significant tributary of this section of Wiscoy Creek is East Koy Creek.

In Allegany County, nearly continuous public fishing right (PFR) easements are located from the Wyoming County/Allegany County line downstream to Pond Road. (The map pin is located at the intersection of Lapp Road and Pond Road, next to the most downstream PFR section.) Angler access is facilitated by two angler footpaths, one off Armison Road and one off Lapp Road, as well as the proximity of the stream to Lapp Road near Pond Road. Unfortunately, most of the stream in Allegany County is not close to any roads; to access the stream from the footpath on Armison Road requires a hike of over half a mile. But this also means you can have some exceptionally good trout fishing all to yourself. (See DEC PFR Map under Links.)

The DEC's Wiscoy Creek Trout Population Estimate (2021) indicated that the Allegany County section of this stream has a healthy population of adult (age 1 and older) wild brown trout (414 fish per mile) at the sampling site just below Pond Road, though these numbers are somewhat less than in other sections of the stream. But what this section lacks in number of fish it makes up for in their size: This section also produced some of the largest trout in the Wiscoy. For the full report, see DEC Technical Brief – Wiscoy Creek under Links.

Wiscoy Creek is not stocked, but periodic sampling by the DEC downstream of the waterfalls located just upstream of County Road 27 in Wiscoy has produced significant numbers of stocked trout. Some of these are fish known to have been stocked in East Koy Creek that have moved downstream into the Wiscoy (fin clips from a study identified their origin and stocking date), and a number of the larger stocked trout are believed to be fish that were stocked in the upper Genesee River and have moved downstream in the river and then up Wiscoy Creek until they are blocked by the waterfalls (see below). Under the right conditions, a surprising number of trout will be found not far downstream of the falls. Unfortunately, the DEC has been unable to obtain public fishing rights along Wiscoy Creek between the falls and the junction with the Genesee River. Landowner permission should be obtained before fishing in that section of the stream, but from what I've been told, it's definitely worth the asking. 

Although the 1.7-mile-long section of Wiscoy Creek between the waterfalls and the Genesee River exhibits water temperatures in the summer that are generally unfavorable to trout survival, it nevertheless supports a sizable population of healthy trout. The reason for this seeming anomaly is interesting. As the water temperature in a trout stream increases, two things normally happen. First, oxygen levels drop because the increasing heat drives oxygen, a gas, out of the water. Second, the warming water speeds up the metabolism of the trout, causing them to require more oxygen just as it's becoming less available. If the water temperature gets too high, the trout will die of stress, organ damage, and suffocation. The trout in the lower end of Wiscoy Creek can survive because high levels of oxygen are churned into the water as it cascades over the waterfalls, not only offsetting the oxygen lost due to heating but also supplying the trout with enough additional oxygen to function normally at their higher metabolic rate. For an interesting article on the effect of water temperature on stream trout, see "How Does Hot Water Affect Trout Fishing?" under Links. Written by the Ausable River Association, the article focuses in part on the Ausable river, but it is generic enough to apply to almost any trout stream. 

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Links to associated resources (Genesee River - Belmont Dam to Portageville, Wiscoy Creek - Wyoming County Section, and East Koy Creek) will be added soon.