Lower Nooksack River flood projections

National Agricultural Imagery Program (NAIP) composite images showing water depth after 1.6 feet (ft) (0.5 meter [m]) and 3.3 feet (1.0 m) of sea-level rise (SLR) for 50 percent, 10 percent, and 4 percent annual exceedance probability (AEP) stream floods, which are expected in coming decades and which will increasingly affect groundwater, drainage issues, and frequencies of tidal and storm surges. A, B, Water depths after 1.6 ft (0.5 m) and 3.3 ft (1.0 m) SLR, respectively, for 50 percent (2 year) AEP stream flood. C, D, Water depths after 1.6 ft (0.5 m) and 3.3 ft (1.0 m) SLR, respectively, for 10 percent (10 year) AEP stream flood. E, F, Water depths after 1.6 ft (0.5 m) and 3.3 ft (1.0 m) SLR, respectively, for 4 percent AEP (25 year) stream flood. NAIP images from U.S. Department of Agriculture National Agricultural Imagery Program, from the report Compound flood model for the lower Nooksack River and delta, western Washington—Assessment of vulnerability and nature-based adaptation opportunities to mitigate higher sea level and stream flooding.