Mississippi River, L&D#11, Dubuque, Iowa

Mississippi River, L&D#14, LeClaire, Iowa

Mississippi River, L&D#11, Dubuque, Iowa

Mississippi River, L&D#14, LeClaire, Iowa

Mississippi River, L&D#11, Dubuque, Iowa

Bolsa Chica Ecological Reserve, California

Bolsa Chica Ecological Reserve, California

Bankston County Park, Iowa

Green Island Wetlands, Iowa

Bolsa Chica Ecological Reserve, California

Maskunky March, Iowa

Maskunky March, Iowa

Maskunky March, Iowa

Mississippi River, Mud Lake, Iowa

Mississippi River, Potosi, Wisconsin

Bankston County Park, Iowa

Green Island Wetlands, Iowa

Green Island Wetlands, Iowa

Green Island Wetlands, Iowa

Mississippi River, Mud Lake, Iowa

Bolsa Chica Ecological Reserve, California

Bolsa Chica Ecological Reserve, California

Bolsa Chica Ecological Reserve, California

near Dubuque, Iowa

near Dubuque, Iowa

Green Island Wetlands, Iowa