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

Site Photos

Field photo showing stream conditions at site WEBR-111-R-2001-149 (Opens in a new window) Field photo showing stream conditions at site WEBR-111-R-2001-150 (Opens in a new window) Field photo showing stream conditions at site WEBR-111-R-2001-151 (Opens in a new window)

Located on BACK BR in the Western Branch watershed, 8-digit code: 02131103.
This stream was visited in the spring on 3/27/2001 and again in the summer on 7/25/2001.

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 Fair - 3.0 / 5.0

Land Use

Land use can provide important information for determining stream health.
(Hint: Screen readers will announce definitions; mouse users can hover over dotted text.)
Catchment area 1,695 acres A stream flowing through a densely forested area. An example of a forested stream.
Urban Land Use 22 %
Agricultural Land Use 33 %
Forested Land Use 45 %


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

Physical Stream Habitat
Instream Habitat 15/20 (Suboptimal)
Epifaunal Substrate 15/20 (Suboptimal)
Velocity/Depth Diversity 12/20 (Suboptimal)
Pool Quality
Pool Extent = 45 meters 		14/20 (Suboptimal)
Riffle Quality
Riffle Extent = 41 meters 		8/20 (Marginal)
Shading 89 %
Embeddedness 17 %


Stream Water Quality:
Water temperature 23.2 ° C
Dissolved oxygen (DO) 7.4 mg/L
pH (lab) 7.18
Conductivity 240 µmho/cm
Alkalinity
(acid neutralizing capacity) 		258.1 µeq/L
Dissolved organic carbon (DOC) 1.6 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 11 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
Blacknose Dace 93
Rosyside Dace 62
Tessellated Darter 55
Creek Chub 52
Fallfish 27
Least Brook Lamprey 16
Eastern Mudminnow 15
American Eel 7
Sea Lamprey 7
White Sucker 6
Redfin Pickerel 1
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
Fowler's Toad
Northern Green Frog
Northern Two-Lined Salamander

Crayfish:
No crayfish noted.

Exotic Plants:
Japanese Honeysuckle
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Orthocladiinae A Non-Biting Midges 35
Cricotopus/Orthocladius Midge 24
Cheumatopsyche Net-Spinning Caddisfly 10
Gammarus Amphipod 6
Ephemerella Sulphur Mayfly 6
Parametriocnemus Non-Biting Midges 4
Tipula Crane Fly 4
Neophylax Caddisfly 3
Polypedilum Non-Biting Midges 3
Brillia Non-Biting Midges 2
Eukiefferiella Non-Biting Midges 1
Hemerodromia Tiny Fly 1
Limnodrilus Worm 1
Rheosmittia Non-Biting Midges 1
Tanytarsini Non-Biting Midges 1
Lepidoptera Aquatic Moth 1
Chironomini Non-Biting Midge 1
Hydrobaenus Midge 1
Lype Net Tube 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.