Jump to navigation By 06/30/2021 Marin Water is studying whether it can release less water from its reservoirs into Lagunitas Creek without harming aquatic species, allowing the district to hold onto more water this winter amid a historic drought. The flow reductions would occur from November to March, when the changes could affect spawning and the rearing of fish eggs. Hydrologists chose four stretches of the creek that are typical habitat and will complete a detailed topographic survey there, then use modeling to determine the conditions at a range of flows, from 20 to 10 cubic feet per second. The models show the water depth, velocity and temperature at thousands of points on the creek, and score them based on habitat suitability. If the study shows that a reduction in flows would have a minimal impact on the ecosystem, the water district will use it to apply for a petition to reduce its required releases during winter.