About the CLWA
CLWA News
Aerial shoreline survey completed
Zero Gravity Aerial of Traverse City completed a total shoreline survey of Crystal Lake during the summer of 2019. An initial high flyover looked at shoals to identify obvious changes like aquatic plant beds or human disturbance. Then the drone took detailed videos of each riparian shoreline from an altitude of about 30 feet. This survey will develop a visual benchmark for future comparison, and identify lakeshore areas of concern. Suggestions for improvement can be discussed collaboratively with lake property owners to encourage changes that will result in a healthier lake.
Features that may be cause for concern include: erosion of beach front, ice damage, invasive plants (for example cladophora, purple loosestrife, phragmites), sea walls and other shore hardening techniques, lawn too close to the lake, drain pipes and drainage ditches. An important part of the project is for the CLWA to educate riparians about property management practices that preserve Crystal’s water quality.
Protecting Crystal Lake Now for Generations to Come.
P.O. Box 89 • Beulah, MI 49617
info@crystallakewatershed.org
231.882.4001 Tel
The Crystal Lake Watershed Association (CLWA), is a non-profit (501c3) organization.
Photography: Jay Burt and Rick Cosaro
Site by: Rick Cosaro
Quagga Mussel (Dreissena rostriformis bugensis)
A close relative of the Zebra mussel which already infests Crystal Lake. Like its cousin, it consumes native phytoplankton and clogs lakeshore recreational equipment. More rounded shell and less prominent dark rings than the Quagga. Can grow to 2 inches in length.
New England Mudsnail (Potamopyrgus antipodarum)
Small dark snails that reproduce rapidly to high densities in many habitats. Their small size makes them difficult to detect when attached to fishing gear or watercraft. They are abundant in the Platte River.
Red Swamp Crayfish (Procambarus clarkii)
Dark red color with bright red raised spots: look like small lobsters. Length 2.2 - 4.7 inches. Compete aggressively with native crayfish for food and habitat. Introduced by live bait dumping, aquarium trade.
Hydrilla (Hydrilla verticillata)
Submerged aquatic plant; green leaves whorled in groups of 4-8. Very slender stems can grow up to 30 feet long. White 3-petaled flowers. Forms dense mats that shade out native vegetation and interferes with recreational activities.
Starry Stonewort (Nitellopsis obtusa)
Submerged whorls of 4-6 leaves with blunt tips; can reach up to 33 inches. Forms dense mats that significantly reduce the diversity of other aquatic plants. Mats impede movement of fish, water flow, and recreational activities.
