MBSS Site Summary for: DIVI-109-R-2001

Site Photos

Field photo showing stream conditions at site DIVI-109-R-2001-1 (Opens in a new window) Field photo showing stream conditions at site DIVI-109-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 - 4.4 / 5.0

Land Use

Land use can provide important information for determining stream health.
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Catchment area 512 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 94 %


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

Physical Stream Habitat
Instream Habitat 18/20 (Optimal)
Epifaunal Substrate 12/20 (Suboptimal)
Velocity/Depth Diversity 7/20 (Marginal)
Pool Quality
Pool Extent = 75 meters 		16/20 (Optimal)
Riffle Quality
Riffle Extent = 0 meters 		0/20 (Poor)
Shading 10 %
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 18.4 ° C
Dissolved oxygen (DO) 6.4 mg/L
pH (lab) 6
Conductivity 50 µmho/cm
Alkalinity
(acid neutralizing capacity) 		76.9 µeq/L
Dissolved organic carbon (DOC) 5.6 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 7 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
Golden Shiner 17
Creek Chubsucker 14
Eastern Mudminnow 7
Tadpole Madtom 3
American Eel 1
Brown Bullhead 1
Chain Pickerel 1
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
American Bullfrog
Eastern Painted Turtle
Eastern Snapping Turtle

Crayfish:
No crayfish noted.

Exotic Plants:
No exotic plants noted.
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Leptophlebia Pronggilled Mayfly 21
Unniella Non-Biting Midge 19
Tanytarsus Non-Biting Midges 16
Conchapelopia Non-Biting Midges 14
Crangonyx Amphipod 3
Caecidotea Isopod 3
Oxyethira Microcaddisfly 3
Cricotopus/Orthocladius Midge 3
Eurylophella Mayfly 2
Larsia Non-Biting Midge 2
Dicrotendipes Non-Biting Midges 2
Phaenopsectra Non-Biting Midges 1
Diptera True Fly 1
Corynoneura Non-Biting Midges 1
Enallagma Narrow-Winged Damselfly 1
Triaenodes Long-Horned Caddisfly 1
Bezzia Biting Midge 1
Simuliidae Black Fly 1
Mesosmittia 1
Molannodes 1
Sialis Alderfly 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.