MBSS Site Summary for: YOUG-221-R-2001

Site Photos

Field photo showing stream conditions at site YOUG-221-R-2001-1 (Opens in a new window) Field photo showing stream conditions at site YOUG-221-R-2001-2 (Opens in a new window)

Located on MILL RUN in the Youghiogheny River watershed, 8-digit code: 05020201.
This stream was visited in the spring on 3/23/2001 and again in the summer on 7/17/2001.

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 - 4.7 / 5.0
Benthic IBI Good - 4.0 / 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 10,929 acres A stream flowing through a densely forested area. An example of a forested stream.
Urban Land Use 9 %
Agricultural Land Use 16 %
Forested Land Use 74 %


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 18/20 (Optimal)
Velocity/Depth Diversity 15/20 (Suboptimal)
Pool Quality
Pool Extent = 40 meters 		18/20 (Optimal)
Riffle Quality
Riffle Extent = 40 meters 		19/20 (Optimal)
Shading 75 %
Embeddedness 35 %
Several measures of instream habitat were considered 'Optimal' at this location.


Stream Water Quality:
Water temperature 15.4 ° C
Dissolved oxygen (DO) 8.8 mg/L
pH (lab) 7.27
Conductivity 330 µmho/cm
Alkalinity
(acid neutralizing capacity) 		146.2 µeq/L
Dissolved organic carbon (DOC) 1.3 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 17 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
Blacknose Dace 43
Smallmouth Bass 41
Green Sunfish 28
Margined Madtom 23
Longnose Dace 19
Creek Chub 16
Bluntnose Minnow 11
River Chub 9
Rock Bass 9
Yellow Bullhead 8
Northern Hogsucker 5
Rainbow Trout 4
Brown Bullhead 3
Greenside Darter 3
Largemouth Bass 1
Rosyside Dace 1
White Sucker 1
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
Northern Green Frog

Crayfish:
No crayfish noted.

Exotic Plants:
No exotic plants noted.
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Baetis Blue-Winged Olive Mayfly 18
Parametriocnemus Non-Biting Midges 17
Epeorus Mayfly 12
Oemopteryx Stonefly 10
Orthocladiinae Midge 9
Polypedilum Non-Biting Midges 8
Prosimulium Black Fly 8
Ephemerella Sulphur Mayfly 7
Tallaperla Roach-Like Stonefly 4
Amphinemura Spring Stonefly 3
Perlidae Common Stonefly 3
Stenonema Flatheaded Mayfly 2
Pteronarcys Giant Stonefly 2
Chloroperlidae Green Stonefly 2
Leuctra  Rolled-Winged Stonefly 2
Enchytraeidae Aquatic Worm 2
Dolophilodes Medium Evening Sedge Caddisfly 2
Cricotopus/Orthocladius Midge 2
Isoperla Stripetail Stonefly 2
Leuctridae Rolledwinged Stonefly 2
Oulimnius Riffle Beetle 2
Tvetenia Non-Biting Midges 2
Perlodidae Perlodid Stonefly 1
Tanytarsini Non-Biting Midges 1
Hydropsyche Net-Spinning Caddisfly 1
Chironominae Non-Biting Midge 1
Serratella Mayfly 1
Neophylax Caddisfly 1
Trichoptera Caddisfly 1
Molophilus 1
Chelifera Aquatic Dance Fly 1
Clioperla Green-Winged Stonefly 1
Dicranota Hairy-Eyed Cranefly 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.