The fishing season on the Madison is a little complex so we highly recommend you check carefully with the Montana fishing regulations for more detailed information. The section from Hegben Lake Dam to Quake Lake is open year round. The stretch from the Quake Lake Outlet to McAtee Bridge is closed to fishing from March 1 until the third Saturday in May. The Madison is open to fishing year round from McAtee Bridge downstream to the Ennis Bridge. The fishing season is closed to fishing from March 1 until the third Saturday in May from the Ennis Bridge downstream to Ennis Lake. Fishing can be very good in this section between the lakes. We like Zebra Nymphs, Tungsten Pheasant Tail, Skinny Nelson and a variety of other small bead head nymphs. You can also find success by swinging a stream through the deeper runs. Access can be tough because of snow. Also check in with Kelly Galluops Slide Inn fly shop in Montana click link below.