As more people move to parts of Southern Colorado, there’s growing concern among some farmers, residents and others about the demand placed on the region’s aquifers. KRCC’s Shanna Lewis spoke with hydrogeologists Lesley Sebol and Matt Sares with the Colorado Geological Survey to learn more about the aquifers in this region. Many of these aquifers are located in structural basins that contain multiple geologic units and aquifers. Denver BasinMatt Sares/CGS:Then moving from that area to say the Colorado Springs area where you're in the Denver basin, again, you can have stream gravels. Via Colorado State University Water Center - Map created from Colorado's Decision Support Systems Map Viewer (Copyright 2005 by Division of Water Resources).