TY  - RPRT
TI  - Resurvey of the Marble Canyon and Bridge Canyon dam sites in Grand Canyon National Park—Changes in sediment storage and evidence supporting the occurrence of bedrock incision through the mid-20th century
AU  - David J. Topping
AU  - Joseph E. Hazel
AU  - Matthew A. Kaplinski
AU  - Paul E. Grams
PY  - 2026
DO  - 10.3133/pp1909
UR  - https://pubs.usgs.gov/publication/pp1909
ID  - pp1909
ER  -