ALERT: The Twin Lakes boat ramp will not open May 17th as planned, and will remain closed until the water level rises. The water level has continued to drop and is well below the minimum operating level for the boat ramp. As spring runoff picks up the water level will rise, but the timing is unpredictable. This is the boat ramp for Twin Lakes. Located on the north shore of the lake just off of highway 82. Zebra and quagga mussels are a serious threat to Colorado waters. This boating season brings with it mandatory state-certified boat inspections to help prevent the spread of zebra and quagga mussels and other aquatic invasive species (AIS) in Colorado lakes and reservoirs. For more information about boat inspections, please visit the DOW website: http://wildlife.state.co.us/Fishing/MandatoryBoatInspections.htm.