- Alluvial
- Anadromous
- Arch
- Bank Side
- Bare
- Boulder
- Box Culvert
- Broken Pipe
- Brush
- Canopy Cover
- Cobble
- Constructed
- Corrugated Metal Pipe
- Crib Wall
- Dam
- Data Logger
- Debris Jam
- Disconnected Pools
- Downstream
- Drop Structure
- Dumping Area
- Fish Passage/Fish Ladder
- Floating
- Flowing
- Gabions
- GIS
- GPS
- GPS unit
- Gravel
- Herbaceous
- Hydrograph
- Hydrology
- In-Stream Outfalls
- Invasive plants
- Line Feature
- Native/ Non-Native Plants
- Natural debris
- Orographic Rain
- Orthographic
- Orthographic photo
- Outfall
- Parcel
- Perennial
- Pier
- Point Feature
- Pool
- Projection
- QA/QC
- Rainshadow Effect
- Rancho
- Raster
- Reinforced Concrete Pipe
- Rip-rap
- Riparian
- Runoff
- Sand
- Scribe
- Severe Erosion
- Shapefile
- Shrub
- Silt/Clay/Mud
- Stagnant
- Substrate
- Terrace
- Thalweg
- TIN (Triangulated Irregular Network)
- Toe
- Top of Bank
- Topography
- Tree
- Undercut
- Upstream
- Vector
- Watershed