MBSS Site Summary for: DIVI-111-R-2001

Site Photos

Field photo showing stream conditions at site DIVI-111-R-2001-1 (Opens in a new window) Field photo showing stream conditions at site DIVI-111-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 Good - 4.3 / 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 1,292 acres A stream flowing through a densely forested area. An example of a forested stream.
Urban Land Use 0 %
Agricultural Land Use 14 %
Forested Land Use 83 %


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 13/20 (Suboptimal)
Velocity/Depth Diversity 12/20 (Suboptimal)
Pool Quality
Pool Extent = 75 meters 		15/20 (Suboptimal)
Riffle Quality
Riffle Extent = 0 meters 		0/20 (Poor)
Shading 20 %
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 22.4 ° C
Dissolved oxygen (DO) 8.1 mg/L
pH (lab) 5.34
Conductivity 70 µmho/cm
Alkalinity
(acid neutralizing capacity) 		23.3 µeq/L
Dissolved organic carbon (DOC) 5.8 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 9 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
Creek Chubsucker 22
Golden Shiner 19
American Eel 6
Pirate Perch 6
Tadpole Madtom 6
Eastern Mudminnow 4
Redfin Pickerel 3
Brown Bullhead 1
Yellow Bullhead 1
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
No amphibians and reptiles noted.

Crayfish:
No crayfish noted.

Exotic Plants:
Japanese Honeysuckle
Mile-A-Minute
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Leptophlebia Pronggilled Mayfly 29
Conchapelopia Non-Biting Midges 17
Rheosmittia Non-Biting Midges 10
Eurylophella Mayfly 9
Unniella Non-Biting Midge 7
Phaenopsectra Non-Biting Midges 7
Labrundinia Non-Biting Midges 3
Enallagma Narrow-Winged Damselfly 3
Cricotopus/Orthocladius Midge 2
Girardia Freshwater Flatworm 2
Nanocladius Non-Biting Midges 2
Tribelos Non-Biting Midges 2
Zalutschia Non-Biting Midge 2
Dubiraphia Riffle Beetle 2
Hemerodromia Tiny Fly 2
Polycentropus Tube Maker Caddisfly 1
Corynoneura Non-Biting Midges 1
Gordiidae Horsehair Worm 1
Triaenodes Long-Horned Caddisfly 1
Sialis Alderfly 1
Simuliidae Black Fly 1
Oxyethira Microcaddisfly 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.