MBSS Site Summary for: BYNU-303-X-2006


Located on Bynum Run in the Bynum Run watershed, 8-digit code: 02130704.
This stream was visited in the spring on 3/30/2006 and again in the summer on 7/12/2006.

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 Poor - 1.3 / 5.0

Land Use

Land use can provide important information for determining stream health.
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Catchment area 14,285 acres A highly channelized urban stream with concrete banks. An example of a highly channelized urban stream.
Urban Land Use 36 %
Agricultural Land Use 35 %
Forested Land Use 29 %


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 10/20 (Marginal)
Velocity/Depth Diversity 18/20 (Optimal)
Pool Quality
Pool Extent = 54 meters 		20/20 (Optimal)
Riffle Quality
Riffle Extent = 53 meters 		19/20 (Optimal)
Shading 55 %
Embeddedness 65 %
The embeddedness, a measure of silt on the stream bottom, was 65%. This is relatively high, and may exclude some biota.
Several measures of instream habitat were considered 'Optimal' at this location.


Stream Water Quality:
Water temperature 22.2 ° C
Dissolved oxygen (DO) 7.6 mg/L
pH (lab) 7.9
Conductivity 242 µmho/cm
Alkalinity
(acid neutralizing capacity) 		801.9 µeq/L
Dissolved organic carbon (DOC) 1.6347 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 22 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
Blue Ridge Sculpin 54
Common Shiner 30
American Eel 23
Satinfin Shiner 23
White Sucker 23
Redbreast Sunfish 19
Northern Hogsucker 15
Longnose Dace 11
Pumpkinseed 11
Swallowtail Shiner 10
Tessellated Darter 10
River Chub 6
Blacknose Dace 4
Bluegill 4
Cutlip Minnow 3
Green Sunfish 3
Sea Lamprey 3
Brown Bullhead 1
Creek Chub 1
Margined Madtom 1
Smallmouth Bass 1
Spottail Shiner 1
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
Northern Dusky Salamander
Northern Two-Lined Salamander

Crayfish:
Orconectes limosus

Exotic Plants:
Japanese Honeysuckle
Japanese Stiltgrass
Mile-A-Minute
Multiflora Rose
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Orthocladius Non-Biting Midges 38
Hydrobaenus Midge 36
Orthocladiinae Midge 15
Eukiefferiella Non-Biting Midges 7
Prosimulium Black Fly 3
Clinocera Aquatic Dance Fly 2
Thienemannimyia group Non-Biting Midges 2
Rheosmittia Non-Biting Midges 1
Simulium Black Fly 1
Diamesa Bloodworm 1
Cheumatopsyche Net-Spinning Caddisfly 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.