MBSS Site Summary for: WILL-120-R-2004


Located on BRADDOCK RUN UT 2 in the Wills Creek watershed, 8-digit code: 02141003.
This stream was visited in the spring on 3/11/2004 and again in the summer on 6/1/2004.

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 Poor - 2.0 / 5.0
Benthic IBI Good - 4.8 / 5.0

Land Use

Land use can provide important information for determining stream health.
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Catchment area 1,061 acres A highly channelized urban stream with concrete banks. An example of a highly channelized urban stream.
Urban Land Use 7 %
Agricultural Land Use 6 %
Forested Land Use 87 %


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

Physical Stream Habitat
Instream Habitat 12/20 (Suboptimal)
Epifaunal Substrate 14/20 (Suboptimal)
Velocity/Depth Diversity 8/20 (Marginal)
Pool Quality
Pool Extent = 40 meters 		8/20 (Marginal)
Riffle Quality
Riffle Extent = 45 meters 		12/20 (Suboptimal)
Shading 60 %
Embeddedness 30 %


Stream Water Quality:
Water temperature 15.7 ° C
Dissolved oxygen (DO) 9.9 mg/L
pH (lab) 7.41
Conductivity 139 µmho/cm
Alkalinity
(acid neutralizing capacity) 		353.4 µeq/L
Dissolved organic carbon (DOC) 1.1 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 3 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
Blacknose Dace 222
Creek Chub 10
Rosyside Dace 4
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
Northern Two-Lined Salamander

Crayfish:
No crayfish noted.

Exotic Plants:
Canada Thistle
Japanese Honeysuckle
Multiflora Rose
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Ephemerella Sulphur Mayfly 21
Caecidotea Isopod 16
Neophylax Caddisfly 13
Perlodidae Perlodid Stonefly 12
Epeorus Mayfly 8
Parametriocnemus Non-Biting Midges 7
Ameletus Combmouthed Minnow Mayfly 5
Diplectrona Net-Spinning Caddisfly 4
Amphinemura Spring Stonefly 4
Tvetenia Non-Biting Midges 3
Diamesinae Non-Biting Midges 3
Eukiefferiella Non-Biting Midges 3
Malirekus 3
Prosimulium Black Fly 1
Paraleptophlebia Blue Quill Mayfly 1
Tanypodinae Non-Biting Midges 1
Tanytarsini Non-Biting Midges 1
Micropsectra Non-Biting Midges 1
Perlidae Common Stonefly 1
Tipula Crane Fly 1
Rhyacophila Free-Living Caddisfly 1
Eurylophella Mayfly 1
Nemouridae Nemourid Stonefly 1
Cheumatopsyche Net-Spinning Caddisfly 1
Sweltsa Stonefly 1
Leuctridae Rolledwinged Stonefly 1
Capniidae Small Winter Stonefly 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.