I encourage everyone to send in the update form so I can send them new map pages, which they can easily add to their book.

The scale is 1 inch equals 2,000 feet, or about 21/2 inches per mile. The maps don't show underwater depth contours because they change so much due to the heavy current.

Knowing the place names for various stretches of the river comes in handy when you're inquiring about local fishing activity.