MBSS Site Summary for: LOCR-102-S-2000


Located on SWAN CR in the Lower Chester River watershed, 8-digit code: 02130505.
This stream was visited in the spring on 4/5/2000 and again in the summer on 7/19/2000.

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 Poor - 1.9 / 5.0

Land Use

Land use can provide important information for determining stream health.
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Catchment area 407 acres A stream flowing through a densely forested area. An example of a forested stream.
Urban Land Use 0.2 %
Agricultural Land Use 9.9 %
Forested Land Use 85.2 %


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

Physical Stream Habitat
Instream Habitat 16/20 (Optimal)
Epifaunal Substrate 17/20 (Optimal)
Velocity/Depth Diversity 8/20 (Marginal)
Pool Quality
Pool Extent = 73 meters 		11/20 (Suboptimal)
Riffle Quality
Riffle Extent = 15 meters 		10/20 (Marginal)
Shading 40 %
Embeddedness 30 %


Stream Water Quality:
Water temperature 24.7 ° C
Dissolved oxygen (DO) 5 mg/L
pH (lab) 6.02
Conductivity 110 µmho/cm
Alkalinity
(acid neutralizing capacity) 		139.5 µeq/L
Dissolved organic carbon (DOC) 33.2 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 6 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
Pumpkinseed 528
Eastern Mudminnow 513
Golden Shiner 86
Bluegill 27
American Eel 9
Yellow Bullhead 1
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
American Bullfrog
Eastern Ratsnake
Northern Green Frog
Southern Leopard Frog

Crayfish:
No crayfish noted.

Exotic Plants:
Japanese Stiltgrass
Multiflora Rose
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Caecidotea Isopod 39
Pisidium Freshwater Pea (Pill) Clam 23
Lumbriculidae Worm 11
Tubificidae Aquatic Worm 6
Endochironomus 4
Simulium Black Fly 3
Cricotopus/Orthocladius Midge 3
Chrysops Deerfly 2
Bezzia Biting Midge 2
Conchapelopia Non-Biting Midges 2
Amphipoda Scud 2
Rheocricotopus Non-Biting Midges 2
Tanypodinae Non-Biting Midges 1
Diplocladius Non-Biting Midges 1
Parametriocnemus Non-Biting Midges 1
Krenopelopia Non-Biting Midge 1
Limnophyes Non-Biting Midge 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.