The Coloma to Greenwood C to G river run in California is a class III-IV river run that is best navigated in the spring or early summer months when water levels are highest. This section of the river is known for its technical rapids, including "Troublemaker" and "Satan's Cesspool." Other obstacles include numerous rocks, drops, and narrow channels. The recommended flow for this section of the river is between 800 and 1,200 cubic feet per second (cfs). This run is not recommended for beginners, and a guide is highly recommended for those who are not experienced on this type of river.

Weather today, A chance of showers and thunderstorms before 1pm, then showers likely and possibly a thunderstorm between 1pm and 3pm, then a chance of showers and thunderstorms after 3pm. Partly sunny, with a high near 63. Light and variable wind becoming west northwest 5 to 8 mph in the morning. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.