Many different variables affect underwater visibility. If you are unable to see the habitat structure in the background of the webcam then lake visibility conditions are poor. A leading factor that affects underwater visibility are the particles in the water. Sediments are washed in by the river due to storms or just seasonal changes. Often, sediments are also stirred up on the lake bottom by animals, human activity in the lake, and currents on windy days. Organic particles are regularly visible from algae, pollen, bacteria, and other microorganisms (especially at night) and these can vary in intensity seasonally. Light can be a leading factor with visibility too. On a sunny day, you can often see more but sometimes only at specific angles. The intensity of the sun on a sunny day may actually silhouette objects whereas on a cloudy day the lighting is less intense and even. At night, you have low visibility because of a lack of light. Using artificial light is difficult at night due to backlighting particles in the water and the intensity of lighting needed to light up an area.