A gravelometer is a field tool used to measure and classify the size of sediment particles, like gravel, cobbles, and boulders, in streams and rivers. It’s a rectangular metal plate with different sized holes corresponding to standard grain-size classes.
Cara E Christofferson
Cara is a Hydrologic Technician at the USGS Oregon Water Science Center.
Science and Products
Hydrologic technician uses a gravelometer
A gravelometer is a field tool used to measure and classify the size of sediment particles, like gravel, cobbles, and boulders, in streams and rivers. It’s a rectangular metal plate with different sized holes corresponding to standard grain-size classes.
Cara takes an eDNA sample
USGS hydrologic technician, Cara, collects an eDNA sample in triplicate using an eDNA Sampler.
USGS hydrologic technician, Cara, collects an eDNA sample in triplicate using an eDNA Sampler.
Science and Products
Hydrologic technician uses a gravelometer
A gravelometer is a field tool used to measure and classify the size of sediment particles, like gravel, cobbles, and boulders, in streams and rivers. It’s a rectangular metal plate with different sized holes corresponding to standard grain-size classes.
A gravelometer is a field tool used to measure and classify the size of sediment particles, like gravel, cobbles, and boulders, in streams and rivers. It’s a rectangular metal plate with different sized holes corresponding to standard grain-size classes.
Cara takes an eDNA sample
USGS hydrologic technician, Cara, collects an eDNA sample in triplicate using an eDNA Sampler.
USGS hydrologic technician, Cara, collects an eDNA sample in triplicate using an eDNA Sampler.