Macroinvertebrate Identification, Count, and Categorization (sampled 26 Jul 2012) by Emma Brereton
New Hope Creek (near Gate 26, Duke Forest, Orange County NC)
|Water Penny Larvae||5||Few|
Common =10-99 organisms; Few= 1-9 organisms; Abundant= 100+ organisms
NOTE: Sensitive organisms: italicized
|Group Name||Group Index Value|
Index Calculation Description
For each group (sensitive, somewhat sensitive, and tolerant), the number of each identification was multiplied by a weighting factor and then added together to produce the group index value (above).
The group index value was then added together to produce a total score: 32
The total score can be rated using this water quality key:
|Excellent (>39)||Good (39-26)||Fair (25.9-17)||Poor (<17)|
From our benthic research, we can conclude that the water quality of the New Hope Creek site where we worked is considered good. This is because of the diversity of sensitive macroinvertebrate exhibited at this site.