Lacustrine systems include all wetland and deepwater habitats associated with depressions or damned channels greater than 8 ha in area, and which have less than 30% of their area dominated by trees, shrubs, or emergent vegetation.
There are a wide variety of conditions that can cause thigh pain. For example, thigh pain can be caused by physical activity, injury, or age-related wear and tear on the hips and knees, which may cause pain or discomfort in the thigh area near the joint.
Pain in the upper back of the thigh may be caused by irritation of the nerve roots coming from the lumbar and sacral spine. These nerve roots join to form a large sciatic nerve, which runs down from the lower back to the back of the leg. People may experience symptoms of sciatica in different ways.