Creating rivers?

O.K.
I want to create the Kenai River in Kenai, AK.
1. Is this possible?
2. Is this entirely too difficult?
3. Which programs should I use for this task?
4. Anything else I should know?
Here is a quick overview/map of the river:
http://www.dnr.state.ak.us/parks/units/kenrvmap.htm
I want to create the Kenai River in Kenai, AK.
1. Is this possible?
2. Is this entirely too difficult?
3. Which programs should I use for this task?
4. Anything else I should know?
Here is a quick overview/map of the river:
http://www.dnr.state.ak.us/parks/units/kenrvmap.htm