NPDP Dam Dictionary

Browse by Letter:
All  A  B  C  D  E  F  G  H  I  J  K  L  M  N  O  P  Q  R  S  T  U  V  W  X  Y  Z  


Term AKA Definition
Roller compacted concrete RCC A mixture of cement, water, and aggregate compacted by rolling.
Roller gate A gate rolled up or down inclined supporting rails by a hoist through sprocket chains around the ends of a cylinder.
Rolling A method of compacting soil using a sheepsfoot roller or a smooth drum roller.
Root zone The area where a low- angle thrust fault steepens and descends into the crust.
Rough fish A nonsport fish.
Rubble dam A masonry dam in which the stones are unshaped or uncoursed. See dam.
Run Seasonal upstream migration of anadromous fish.