These different pieces of information fit together to give a good picture of a stream.
Volunteers gather data over months and years. The stream data is meaningful.
Stream data becomes MORE meaningful when you have a dependable comparison.
High quality streams have been designated for all Oklahoma ecoregions. High Quality Streams known to have high quality fish and macroinvertebrate populations, in-stream and riparian habitat, and water quality.
Blue Thumb staff works with volunteers to review stream data and compare it against the high quality streams.
Different fish and macroinvertebrate species have different abilities to tolerate pollution and habitat changes. How does the life in YOUR stream compare to the life in your ecoregion’s high quality streams?
Important – Volunteers can see trends, changes at their own sites.
Volunteers review data they have gathered and work with staff to produce reports.
Use information to educate citizens about local streams.
People want to know about local stream health. People can protect streams.
Also available: Data reports from the OCC Water Quality Division
Displays/exhibits News articles Presentations Creek cleanup events Watershed groups
Some streams need help… some streams are wonderlands of life.
Index of Biotic Integrity (IBI) scoring criteria for fish. <18% 18-36% >36% Proportion individuals as lithophilic spawners <20% 20-45% >45% Proportion insectivorous cyprinid individuals >25% 10-25% <10% Proportion tolerant individuals <33% 33-67% >67% Number of intolerant species <33% 33-67% >67% Number of sunfish species <33% 33-67% >67% Number of sensitive benthic species <33% 33-67% >67% Number of species 1 3 5 Metrics
Index of Biotic Integrity (IBI) score interpretation for fish. Few species and individuals present; tolerant species dominant; diseased fish frequent E 20 – 37% Top carnivores and many expected species absent or rare; omnivores and tolerant species dominant D 47 – 57% Intolerant and sensitive species rare or absent C 67 – 73% Decreased species richness, especially intolerant species B 80 – 87% Comparable to pristine conditions, exceptional species assemblage A 97 – 100 % Attributes Condition % of reference
Physical Habitat + Biological Community Fish Bugs + Water Chemistry Stream Health Delaware Creek Coffee Creek