MBSS Site Summary for: LYOU-110-R-2004


Located on COTTON RUN in the Little Youghiogheny R watershed, 8-digit code: 05020202.
This stream was visited in the spring on 4/6/2004 and again in the summer on 6/24/2004.

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 Fair - 3.8 / 5.0

Land Use

Land use can provide important information for determining stream health.
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Catchment area 536 acres A stream flowing through a densely forested area. An example of a forested stream.
Urban Land Use 7 %
Agricultural Land Use 40 %
Forested Land Use 50 %


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

Physical Stream Habitat
Instream Habitat 13/20 (Suboptimal)
Epifaunal Substrate 5/20 (Poor)
Velocity/Depth Diversity 10/20 (Marginal)
Pool Quality
Pool Extent = 33 meters 		8/20 (Marginal)
Riffle Quality
Riffle Extent = 58 meters 		14/20 (Suboptimal)
Shading 90 %
Embeddedness 50 %


Stream Water Quality:
Water temperature 12.9 ° C
Dissolved oxygen (DO) 8.1 mg/L
pH (lab) 7.02
Conductivity 78 µmho/cm
Alkalinity
(acid neutralizing capacity) 		164.4 µeq/L
Dissolved organic carbon (DOC) 0.9 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 5 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
Creek Chub 30
Blacknose Dace 28
Fathead Minnow 4
White Sucker 3
Golden Shiner 2
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
Northern Two-Lined Salamander

Crayfish:
No crayfish noted.

Exotic Plants:
No exotic plants noted.
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Leuctra  Rolled-Winged Stonefly 66
Ephemerella Sulphur Mayfly 21
Perlodidae Perlodid Stonefly 13
Diplectrona Net-Spinning Caddisfly 7
Stenonema Flatheaded Mayfly 6
Baetidae Small Minnow Mayfly 3
Parametriocnemus Non-Biting Midges 3
Optioservus Riffle Beetle 2
Promoresia Riffle Beetle 2
Micropsectra Non-Biting Midges 2
Caecidotea Isopod 2
Ectopria Water Penny Beetle 1
Rhyacophila Free-Living Caddisfly 1
Baetis Blue-Winged Olive Mayfly 1
Neophylax Caddisfly 1
Ameletus Combmouthed Minnow Mayfly 1
Tipulidae Cranefly 1
Amphinemura Spring Stonefly 1
Tanytarsini Non-Biting Midges 1
Thienemannimyia group Non-Biting Midges 1
Tvetenia Non-Biting Midges 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.