Drainage area ~5 square miles.

We're tallying this one from the bottom up because different folks will do different lengths, depending upon their interests.

For this uppermost put-in, from the end of the guardrail (at the take-out), drive 1.4 miles, where you should see a bald hill West of the highway. If you walk due West into the woods, down the hill, you'll quickly encounter a small creek. Follow that North to Sandstone Creek, where you'll be right at the (apparent) first good drop.