Osage orange also makes some really good firewood...
And the BEST longbows!
Osage orange also makes some really good firewood...
With the steep sides of that ravine, you will need a massive dam in order to back up enough water to be significant. Nothing beats a nice pond or long lake for relaxation though so it will be worth the effort. You may want to consult with your county extension service about damming that ravine prior to doing it AND to maybe get some advice on how large the dam needs to be to hold back the several feet of water that you will need in order to have something more than a narrow creek.