MBSS Site Summary for: QA-N-031-202-95


Located on ISLAND CR in the Southeast Creek watershed, 8-digit code: 02130508.
This stream was visited in the spring on 3/28/1995 and again in the summer on 7/19/1995.

Index of Biotic Integrity (IBI) Results:

An Index of Biotic Integrity (IBI) is a scientific tool used to identify and classify stream health. An IBI associates anthropogenic influences on a stream or with biological condition in the stream, and is formulated using data developed from biosurveys.
Details on the development and application of MBSS IBIs are in this document.
Fish IBI Fair - 3.7 / 5.0
Benthic IBI Poor - 2.7 / 5.0

Land Use

Land use can provide important information for determining stream health.
(Hint: Screen readers will announce definitions; mouse users can hover over dotted text.)
Catchment area 2,591 acres Cows standing in a stream at a site with high agricultural land use. Cows survey the sampling procedure at this extreme example of a highly agriculturalized site.
Urban Land Use 0.3 %
Agricultural Land Use 64.9 %
Forested Land Use 34.2 %


Stream showing woody debris, logs, and rocky substrate.
An example of woody debris in a stream.

Physical Stream Habitat
Instream Habitat 5/20 (Poor)
Epifaunal Substrate 3/20 (Poor)
Velocity/Depth Diversity 3/20 (Poor)
Pool Quality
Pool Extent = meters 		16/20 (Optimal)
Riffle Quality 0/20 (Poor)
Shading 75 %
Embeddedness 100 %
The embeddedness, a measure of silt on the stream bottom, was 100%. This is very high, and may adversely affect biotic communities.
Several measures of instream habitat were considered 'Poor' at this location.


Stream Water Quality:
Water temperature 24.2 ° C
Dissolved oxygen (DO) 1.2 mg/L
Dissolved oxygen levels measured in the stream were very low (1.2 mg/L). Many fishes and other aquatic animals cannot tolerate low levels of oxygen in the water.
pH (lab) 7.11
Conductivity 217 µmho/cm
Alkalinity
(acid neutralizing capacity) 		1315 µeq/L
Dissolved organic carbon (DOC) 9 mg/L

Biological Stream Condition:

Surveys of the organisms living within a stream can give indications of stream health. Species richness, or the number of different species present, as well as indicator species (species whose presence, absence or abundance can serve as a measure of environmental conditions) are informative for stream health. 		Close-up of a mayfly indicator species.

Fish Survey Results:
The following 8 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
Golden Shiner 51
Eastern Mudminnow 37
Tadpole Madtom 13
Creek Chubsucker 12
Pirate Perch 6
Bluegill 5
American Eel 3
Largemouth Bass 3
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
American Bullfrog
Northern Green Frog

Crayfish:
No crayfish noted.

Exotic Plants:
No exotic plants noted.
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Physa Air-Breathing Freshwater Snail 72
Cricotopus Non-Biting Midges 12
Palmacorixa 8
Dicrotendipes Non-Biting Midges 3
Gammarus Amphipod 2
Stenonema Flatheaded Mayfly 1
Caecidotea Isopod 1
Orthocladiinae Midge 1
Dubiraphia Riffle Beetle 1
Planorbella 1
Glyptotendipes 1
Kick net sampling for macroinvertebrates.
Sampling with a kick net.

Information disclaimer: The information and data on this page is for guidance and general planning purposes only. It should not be used to make decisions on specific matters.