Gross Reservoir is not gross! It is an awesome SUPing, kayaking, or canoeing option close to Denver and Boulder. The Winiger Ridge campground is at the end of forest road 359 on the west side of the reservoir. There are around 30 well spread out campsites - some on the shoreline and some covered by forest. It is a free, first come first serve campground with minimal facilities. The bathroom is all the way up at the top of the road. While the campsites are great, exploring Gross Reservoir is the real reason to come. There are a lot of inlets to paddle into and trails to explore. However, there are some cons to the reservoir; there are a lot of rules that are strictly enforced. There is no swimming in the reservoir, which is very tempting. You can only launch your boat at the boat launch on the southeast side (far from the campground) of the reservoir that is monitored by a ranger. He requires you to have a life vest, whistle, and your name written on your boat. Violating the rules is punishable by a fine. He enforces the rules by driving around the reservoir in his motorized boat every hour or so catching people who are swimming, don't have a life vest, etc. So, it's best to just follow the rules here or go somewhere else. Besides that, it's a good spot for a little getaway from the city.