When the fishing season first opens, there are many anglers already at the park anxious to start fishing. It is very common knowledge that the Firehole River is a very good stream to fish when the season first opens. Other areas are the lowest part of the Madison River and the lowest part of the Gibbons River, however, these sections are often overlooked. The “catching” is usually good from the very first day if the right area of the streams are fished with good presentations of the right flies. There’s a logical reason the Firehole is at the top of the list when the season opens. The geysers keep the water temperature up enough to keep the trout active and the aquatic insects hatching. The stream is the warmest just below Old Faithful where there are several large geysers but there are many other areas of the river with warm water. In fact, there are few areas of the stream that isn’t warm enough to keep the trout active and hatches taking place. Since it won’t be a secrete that the the upper section of the river near Old Faithful is a prime location to fish when the season first opens, it does present another problem. It can get a little crowed. You can fish the same water another angler just finished fishing. The grassy banks of the stream doesn’t leave my evidence someone has just fished a certain section of the stream. The thing to remember is that most all of the main river is warm enough to provide an excellent opportunity to catch good numbers of trout. You can be much better off fishing untouched water that is plenty warm enough than fishing in the same area many other anglers are and have fished. Even the lowest part of the Firehole River, in the canyon is usually warm enough on the opening day of the season to provide good opportunity.