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.

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:
- An airborne campaign with three instruments: UAVSAR, AVIRIS, and AirSWOT
- A field campaign with boats and boots on the ground to take measurements
Funded by the Earth Venture Suborbital (EVS-3) program, Delta-X's 5-year mission will operate from 2019–2023.


