wrote:
Around here it's "Rio Grande River"

bh



Urban fisheries often have the largest trout available in a given
drainage. As trout rivers enter more populated areas,
pollution in various forms enter the system. This pollution can increase
the fertility of relatively sterile rivers so they can produce more and
larger fish. The Bow River is the most famous example of this.

In the Rockies, this pollution is generally from water returning after
irrigating fields and runoff from lawns etc. In addition, water temps in
these areas generally rise and the rivers gradually begin to become warm
water fisheries. The very biggest trout in these drainages generally
live in or just above these transition zones. These transition zones are
areas where the water is still cool enough to support trout but warm
enough to start supporting warm water fishes. Trout population densities
are usually lower (often much lower) than in upstream sections, but the
average sized fish is MUCH bigger.

Another plus is that these fisheries are often ignored. Usually they
don't look like trout water and anglers pass them by on their way to
"better" waters.

Willi