Look for Richland Creek gauge to be showing at least zero.  0.5 feet is a good solid level, and 1 foot would be a good maximum.  There are three different streams that make up Richland, so sometimes the water is not evenly distributed in each stream.  At the put in, it should look floatable without too much scraping.  Tigues creek will add more water than Morgan has prior to the confluence.  Too much water can create alot of push into some of the plateau's biggest unrunnable sieves.