| A | B |
| Acidity | measure of hydrogen ions |
| alkalinity | pH greater than 7 |
| assessment | analysis of water through chemistry and biology |
| benthic | bottom of a streambed |
| channel | waterway that contains movng water |
| community | the makeup of organisms |
| culvert | construction that diverts natural flow of water |
| deionized water | water that has ions removed |
| designated uses | signs that support specific water usage |
| embeddedness | degree to which an object is buried |
| emergent plants | aquatic plants that extend out of water |
| eutrphication | addition of nutrients to water |
| floodplain | flat area next to a stream |
| gradient | a slope |
| habitat | area in which an organism lives |
| macroinvertebrates | organism that has no backbone |
| meander | winding section of a stream |
| pH | measure of concentration of acids and bases |
| Phosphorus | a nutrient |
| riffle | section in stream where water breaks over rocks |
| submergent plants | plants completly under water |
| taxonomic key | guide to identify organisms |
| turbidity | the cloudiness in water |
| pH test | concentration of acids and bases |
| Conductivity | ablilty to measure electrical current |
| Salinity | measure of salt content |
| Nitrates | nutrients plants need to grow |
| blue water | water with little dissolved materials |
| Reddish water | dissolved organic materials |
| Grey water | contains runoff from urban areas |
| Green water | suspension of algae |