| Drainage-network position | |
|---|---|
| UM | Upper main stem |
| MM | Middle main stem |
| LM | Lower main stem |
| UT | Upper main-stem tributary |
| MT | Middle main-stem tributary |
| LT | lower main-stem tributary |
| Valley type/stream meandering | |
| N | No valley development, stream unconfined and flows on glacial deposits |
| C | Confined, V-shaped valleys with no flood plain, bedrock, or colluvial |
| E | Unconfined valley, entrenched meanders; stream meanders follow valley course, affected by geologic setting; some flood plain |
| A | Unconfined valley with alluvial meanders, stream meanders reflect fluvial processes; valley wider than meander belt, wide flood plain |
| B | Confined valley formed in bedrock, no flood plain |
| Dominant bedrock type for segment | |
| SED | Slate/sedimentary |
| GAB | Duluth gabbro complex |
| VOL | Felsic and mafic volcanics |
| IN | Intrusions |
| BUR | Bedrock buried by glacial deposits |
| Glacial landform/deposits | |
| SD | Supraglacial drift |
| OW | Outwash |
| IC | Ice contact |
| LA | Glacial lake |
| SH | Post-glacial shoreline/beach |
| BED | Bedrock surface |
| TP | Till plain |
| UN | Undifferentiated |
| Dominant watershed land cover | |
| U | Urban |
| D | Developing urban |
| A | Agriculture |
| F | Forest |
| W | Wetland |
| G | Grass |
| S | Shrubland |
| R | Roads |
| Channel type | |
| CO | Colluvial |
| BE | Bedrock |
| CA | Cascade |
| SP | Step-pool |
| PB | Plane-bed |
| PR | Pool-riffle |
| AR | Artificial |
| WE | Wetland |
| Dominant substrate | |
| BD | Bedrock |
| BO | Boulder |
| CO | Cobble |
| GV | Gravel |
| SA | Sand |
| FINES | Fines/Organic debris |
| AR | Artificial – concrete and others |
| Mode of sediment transport | |
| SOi | Source—incision |
| SOb | Source—bluff erosion |
| SOw | Source—bank erosion, widening |
| T | Transfer |
| SIc | Sink—lateral and mid-channel sand/gravel bars |
| SIb | Sink—overbank sedimentation |
| SIa | Sink—aggradation |
| SIp | Sink—fines in pools |
| Flood attenuation | |
| NO | None |
| FP | Flood-plain attenuation |
| WE | Wetland storage |
| Dominant geomorphic processes | |
| H | Headcutting |
| I | Incision |
| EBL | Bluff/terrace erosion |
| EBA | Bank erosion |
| W | Widening |
| LM | Lateral migration |
| OS | Overbank sedimentation/levee formation |
| BF | Mid-channel/lateral bar formation |
| A | Aggradation |
| EX | Expansion of flow area |
| ST | Stable |
| Causes for geomorphic disturbance | |
| CL | Logging, agriculture, clearing |
| UP | Upstream changes in sediment/water inputs |
| UR | Urban development |
| CA | Man-made channel alterations |
| RO | Road drainage |
| DI | Ditching |
| HI | Hiking trails |
| GV | Gravel pits |
| NO | None |
| Potential changes in sediment/water inputs | |
| Y | Yes |
| N | No |
| Potential sensitivity to change | |
| LO | Low—little or no change in overall channel morphology expected |
| MO | Moderate—minor changes in substrate size, width, pool depth |
| HI | High—substantial, readily detectable changes in channel morphology with a change in an important factor |