MBSS Site Summary for: DIVI-112-R-2001

Site Photos

Field photo showing stream conditions at site DIVI-112-R-2001-1 (Opens in a new window) Field photo showing stream conditions at site DIVI-112-R-2001-2 (Opens in a new window)

Located on POLLITTS BR in the Dividing Creek watershed, 8-digit code: 02130204.
This stream was visited in the spring on 3/14/2001 and again in the summer on 6/4/2001.

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 Good - 4.7 / 5.0

Land Use

Land use can provide important information for determining stream health.
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Catchment area 436 acres A stream flowing through a densely forested area. An example of a forested stream.
Urban Land Use 0 %
Agricultural Land Use 4 %
Forested Land Use 93 %


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

Physical Stream Habitat
Instream Habitat 16/20 (Optimal)
Epifaunal Substrate 11/20 (Suboptimal)
Velocity/Depth Diversity 9/20 (Marginal)
Pool Quality
Pool Extent = 75 meters 		15/20 (Suboptimal)
Riffle Quality
Riffle Extent = 0 meters 		0/20 (Poor)
Shading 15 %
Embeddedness 100 %
The embeddedness, a measure of silt on the stream bottom, was 100%. This is very high, and may adversely affect biotic communities.


Stream Water Quality:
Water temperature 22.2 ° C
Dissolved oxygen (DO) 7.8 mg/L
pH (lab) 6.08
Conductivity 50 µmho/cm
Alkalinity
(acid neutralizing capacity) 		95.6 µeq/L
Dissolved organic carbon (DOC) 5.9 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 10 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
Eastern Mudminnow 18
Creek Chubsucker 11
Tadpole Madtom 6
Chain Pickerel 4
American Eel 3
Golden Shiner 3
Pirate Perch 3
Redfin Pickerel 2
Yellow Bullhead 2
Brown Bullhead 1
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
American Bullfrog
Fowler's Toad

Crayfish:
Procambarus

Exotic Plants:
No exotic plants noted.
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Leptophlebia Pronggilled Mayfly 24
Unniella Non-Biting Midge 23
Eurylophella Mayfly 16
Enallagma Narrow-Winged Damselfly 8
Conchapelopia Non-Biting Midges 6
Caenis Mayfly 6
Zalutschia Non-Biting Midge 4
Tanytarsini Non-Biting Midges 4
Argia Narrow-Winged Damselfly 3
Clinotanypus Non-Biting Midge 2
Triaenodes Long-Horned Caddisfly 2
Simulium Black Fly 2
Stegopterna Black Fly 2
Crangonyx Amphipod 2
Synurella Amphipod 1
Platycentropus 1
Sialis Alderfly 1
Calopteryx Damselfly 1
Oxyethira Microcaddisfly 1
Cricotopus/Orthocladius Midge 1
Labrundinia Non-Biting Midges 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.