Skip to Main Content
Our MD Streams
Rivers & Streams
Rivers and Streams Home
Maryland Biological Stream Survey
Stream Waders Volunteers
Maryland Water Monitoring Council
Maryland Stream Health
Marcellus Shale Stream Monitoring
MBSS Trainings and Certifications
Maryland Invasive Species
Species Spotlight Archives
Definition of Terms
There is a lot of technical terms on the Rivers and Streams website. This page is designed to help navigate and define these words and phrases. Use the line below to skip to a certain letter.
Moderately steep stream area (4-8% gradient) with turbulent water movement and intermittent whitewater.
A specified length of stream. A relatively similar stretch of a stream with a repetitive sequence of physical characteristics and habitat types. A portion of a stream that extends downstream from the confluence of two streams to the next confluence.
A natural or artificial impoundment where water is collected, stored, regulated, and released for human use.
Actions taken to return a habitat, ecosystem, or community to its original condition after damage resulting from a natural or human disturbance.
Shallow reaches with low flow (1-4% gradient) in channels of finer particles, characterized by small hydraulic jumps over rough substrate causing ripples and waves without breaking the surface tension.
Vegetation growing on or near the banks of a stream or other water body.
Large, natural stream or modified channel that flows in a defined course.
Root mass from a tree.
Irregularity of a substrate surface.
Stream substrate particles between 128 and 256 mm (5-10 in) in diameter. Synonymous with small boulders.
Swiftly flowing stream reach with a gradient less than 4%, little to no surface agitation or turbulence, and approximately uniform flow.
Natural drainage of water away from an area. Precipitation that flows overland before entering a stream channel.
Register to Vote
580 Taylor Ave, Annapolis MD 21401