MBSS Site Summary for: LOCR-102-S-2009

Site Photos

Field photo showing stream conditions at site LOCR-102-S-2009-1 (Opens in a new window) Field photo showing stream conditions at site LOCR-102-S-2009-2 (Opens in a new window)

Located on UT Swan Creek in the Lower Chester River watershed, 8-digit code: 02130505.
This stream was visited in the spring on 3/18/2009 and again in the summer on 6/9/2009.

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 - 3.3 / 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 431 acres A stream flowing through a densely forested area. An example of a forested stream.
Urban Land Use 0 %
Agricultural Land Use 16.4 %
Forested Land Use 76.8 %


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

Physical Stream Habitat

Instream Habitat 14/20 (Suboptimal)
Epifaunal Substrate 15/20 (Suboptimal)
Velocity/Depth Diversity 6/20 (Marginal)
Pool Quality
Pool Extent = 71 meters
9/20 (Marginal)
Riffle Quality
Riffle Extent = 7 meters
12/20 (Suboptimal)
Shading 60 %
Embeddedness 100 %
The embeddedness, a measure of silt on the stream bottom, was 100%. This is very high, and may adversely affect biotic communities.


Stream Water Quality:

Water temperature 23.7 ° C
Dissolved oxygen (DO) 5.3 mg/L
pH (lab) 6.04
Conductivity 90 µmho/cm
Alkalinity
(acid neutralizing capacity)
87.6 µeq/L
Dissolved organic carbon (DOC) 13.9308 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 8 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
Eastern Mudminnow 375
Pumpkinseed 68
Golden Shiner 20
Bluegill 6
Eastern Mosquitofish 4
Redfin Pickerel 4
Brown Bullhead 1
Largemouth Bass 1
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:

American Bullfrog
Fowler's Toad
Gray Treefrog
Northern Green Frog
Southern Leopard Frog

Crayfish:

Cambarus diogenes
Procambarus clarkii

Exotic Plants:

Autumn Olive
Japanese Honeysuckle
Japanese Stiltgrass
Multiflora Rose
Wineberry
 

Benthic Macroinvertebrates:

Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Orthocladius Non-Biting Midges 23
Caecidotea Isopod 15
Paraphaenocladius Non-Biting Midges 6
Thienemannimyia Group Non-Biting Midges 6
Ironoquia Northern Caddisfly 5
Parametriocnemus Non-Biting Midges 5
Stegopterna Black Fly 5
Crangonyx Amphipod 4
Polypedilum Non-Biting Midges 4
Dicrotendipes Non-Biting Midges 3
Synurella Amphipod 3
Kiefferulus 3
Hydrobaenus Midge 3
Nemouridae Nemourid Stonefly 3
Menetus Air Breathing Freshwater Snail 3
Ptilostomis Giant Casemaker Caddisfly 2
Bezzia Biting Midge 2
Paratanytarsus Non-Biting Midges 2
Tanypus Non-Biting Midge 2
Libellulidae Skimmer Dragonfly 2
Prostoia Spring Stonefly 1
Corixidae Water Boatman 1
Zavrelimyia Non-Biting Midges 1
Cryptochironomus Non-Biting Midges 1
Ceratopogonidae Biting Midge 1
Chironomini Non-Biting Midge 1
Clinotanypus Non-Biting Midge 1
Paramerina Non-Biting Midge 1
Neoporus 1
Tubificidae Aquatic Worm 1
Peltodytes Crawling Water Beetle 1
Chrysops Deerfly 1
Paratendipes European Non-Biting Midge 1
Musculium Fingernail Clam 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.