MBSS Site Summary for: BYNU-121-R-2023

Site Photos

Field photo showing stream conditions at site BYNU-121-R-2023_Midpoint_facing_downstream (Opens in a new window) Field photo showing stream conditions at site BYNU-121-R-2023_Midpoint_facing_upstream (Opens in a new window)

Located on BYNUM RUN in the Bynum Run watershed, 8-digit code: 02130704.
This stream was visited in the spring on 3/8/2023 and again in the summer on 8/11/2023.

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 - 4.0 / 5.0
Benthic IBI Poor - 2.3 / 5.0

Land Use

Land use can provide important information for determining stream health.
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Catchment area No data available A highly channelized urban stream with concrete banks. An example of a highly channelized urban stream.
Urban Land Use 75 %
Agricultural Land Use 15.3 %
Forested Land Use 8.7 %


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 11/20 (Suboptimal)
Velocity/Depth Diversity 10/20 (Marginal)
Pool Quality
Pool Extent = 58 meters 		15/20 (Suboptimal)
Riffle Quality
Riffle Extent = 17 meters 		8/20 (Marginal)
Shading 70 %
Embeddedness 40 %


Stream Water Quality:
Water temperature 20.1 ° C
Dissolved oxygen (DO) 7.25 mg/L
pH (lab) 7.01
Alkalinity
(acid neutralizing capacity) 		646.7 µeq/L
Dissolved organic carbon (DOC) 1.169 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 12 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
Creek Chub 176
White Sucker 51
Blacknose Dace 45
Rosyside Dace 44
Golden Shiner 23
Green Sunfish 20
Bluegill 13
Tessellated Darter 10
Creek Chubsucker 9
Blue Ridge Sculpin 6
American Eel 2
Largemouth Bass 1
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
No amphibians and reptiles noted.

Crayfish:
Faxonius limosus

Exotic Plants:
Japanese Barberry
Japanese Honeysuckle
Japanese Stiltgrass
Multiflora Rose
Oriental Bittersweet
Wineberry
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
CHEUMATOPSYCHE Net-Spinning Caddisfly 23
SYMPOTTHASTIA Non-Biting Midges 16
CHIMARRA Fingernet Caddisfly 11
HYDROPSYCHE Net-Spinning Caddisfly 9
PARAMETRIOCNEMUS Non-Biting Midges 9
TANYTARSUS Non-Biting Midges 6
THIENEMANNIMYIA GROUP Non-Biting Midges 6
MICROTENDIPES Non-Biting Midges 5
STENELMIS Beetle 5
HYDROBAENUS Midge 4
CRANGONYX Amphipod 4
ORTHOCLADIUS Non-Biting Midges 4
ANTOCHA Crane Fly 3
NEOPHYLAX Caddisfly 2
HYDROPSYCHIDAE Common Netspinner Caddisfly 2
POLYPEDILUM Non-Biting Midges 2
RHEOTANYTARSUS Non-Biting Midges 2
DIAMESA Bloodworm 1
BRILLIA Non-Biting Midges 1
HEMERODROMIA Tiny Fly 1
LUMBRICULIDAE Worm 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.