Answer:

silt

Answer	Crossword Clue
SILT	River sediment
SILT	Sediment deposit
SILT	Tahoe deposit

SILT	Stream deposit
SILT	Delta material
SILT	River deposit
SILT	Bank deposit
SILT	Delta clogger
SILT	Sediment
SILT	Delta deposit
SILT	Bank deposit?

SILT	Delta buildup
SILT	Erosion material
SILT	Fine deposit
SILT	River residue
SILT	Loam component
SILT	Channel buildup
SILT	Flooding deposit
SILT	Riverbank residue

SILT	Dam buildup
SILT	Riverbank deposit
SILT	Water turbidity cause
SILT	It builds up in channels
SILT	Alluvium
SILT	Dredger's target
SILT	Channel choker
SILT	Delta's buildup

SILT	Sedimentary stuff
SILT	Mississippi mud
SILT	It sinks to the bottom
SILT	Dredging target
SILT	Composition of a river sandbar
SILT	Dam nuisance?
SILT	Delta accumulation
SILT	Mouth build-up

SILT	River-bottom accumulation
SILT	River mud
SILT	Delta debris
SILT	Earthy matter
SILT	Mississippi product