Deltas Like Fuerte River Delta
Balsas River Delta
Delta
6.62
Fair
Usumacinta River Delta
Delta
8.74
Great
Grijalva River Delta
Delta
7.71
Good
Colorado River Delta
Delta
7.10
Good
Papaloapan River Delta
Delta
6.82
Fair
Pánuco River Delta
Delta
5.92
Mediocre
Mississippi River Delta
Delta
9.20
Excellent
Kuskokwim River Delta
Delta
9.01
Excellent
Yukon-Kuskokwim Delta
Delta
8.85
Great
Nushagak River Delta
Delta
8.74
Great
Mackenzie Delta
Delta
8.70
Great
Suwannee River Delta
Delta
8.61
Great
Copper River Delta
Delta
8.60
Great
Bear River Delta
Delta
8.49
Great
Atchafalaya River Delta
Delta
8.45
Great
Apalachicola River Delta
Delta
8.44
Great
Wax Lake Delta
Delta
8.35
Great
Susitna River Delta
Delta
8.30
Great
Winisk River Delta
Delta
8.21
Great
Sacramento-San Joaquin Delta
Delta
8.20
Great
Fraser River Delta
Delta
8.20
Great
Moose River Delta
Delta
8.18
Great
St. Clair River Delta
Delta
8.12
Great
Skagit River Delta
Delta
8.11
Great
