Red, white, and blue NASA meatball logo Jet Propulsion Laboratory
California Institute of Technology


Colorful radar image of the Mississippi Delta

River deltas and their wetlands are drowning as a result of sea level rise and reduced sediment inputs. The Delta-X mission will determine which parts will survive and continue to grow, and which parts will be lost.

Blue and green Delta-X logo with three airplanes, a boat, and vegetation
The Delta-X logo. “Delta” (Δ) is the greek symbol for change. “X” represents exchange of land and soil.

Delta-X studies the Mississippi River Delta in the United States, which is growing and sinking in different areas. To measure the movement of water and soil in the region, Delta-X conducts two simultaneous campaigns:

Funded by the Earth Venture Suborbital (EVS-3) program, Delta-X's 5-year mission will operate from 2019–2023.

How do deltas grow? Learn more about the mission.