MBSS Site Summary for: SWAN-250-T-2007

Site Photos

Field photo showing stream conditions at site SWAN-250-T-2007-1 (Opens in a new window) Field photo showing stream conditions at site SWAN-250-T-2007-2 (Opens in a new window)

Located on Swan Creek in the Swan Creek watershed, 8-digit code: 02130706.
This stream was visited in the spring on 3/12/2007 and again in the summer on 6/15/2007.

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 Fair - 3.7 / 5.0
Benthic IBI Poor - 2.4 / 5.0

Land Use

Land use can provide important information for determining stream health.
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Catchment area 9,611 acres A stream flowing through a densely forested area. An example of a forested stream.
Urban Land Use 14.2 %
Agricultural Land Use 41.9 %
Forested Land Use 43.2 %


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 16/20 (Optimal)
Velocity/Depth Diversity 8/20 (Marginal)
Pool Quality
Pool Extent = 73 meters 		10/20 (Marginal)
Riffle Quality
Riffle Extent = 19 meters 		11/20 (Suboptimal)
Shading 55 %
Embeddedness 15 %


Stream Water Quality:
Water temperature 18.2 ° C
Dissolved oxygen (DO) 9.4 mg/L
pH (lab) 7.63
Conductivity 261 µmho/cm
Alkalinity
(acid neutralizing capacity) 		573.8 µeq/L
Dissolved organic carbon (DOC) 1.5219 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 14 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
Blacknose Dace 657
Satinfin Shiner 365
White Sucker 282
Tessellated Darter 187
American Eel 143
Margined Madtom 127
Cutlip Minnow 99
Green Sunfish 48
Common Shiner 17
River Chub 13
Swallowtail Shiner 5
Creek Chub 1
Pumpkinseed 1
Redbreast Sunfish 1
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
Eastern American Toad
Gray Treefrog
Northern Green Frog
Northern Two-Lined Salamander
Northern Watersnake

Crayfish:
Cambarus bartonii bartonii
Orconectes limosus

Exotic Plants:
Garlic Mustard
Japanese Stiltgrass
Multiflora Rose
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Cheumatopsyche Net-Spinning Caddisfly 21
Orthocladius Non-Biting Midges 16
Crangonyx Amphipod 15
Diamesa Bloodworm 8
Hydropsyche Net-Spinning Caddisfly 5
Hydrobaenus Midge 4
Strophopteryx Early Brown Stonefly 4
Prostoia Spring Stonefly 4
Psephenus Water Penny 3
Sympotthastia Non-Biting Midges 3
Antocha Crane Fly 3
Leucotrichia 3
Prosimulium Black Fly 2
Optioservus Riffle Beetle 2
Amphinemura Spring Stonefly 1
Clinocera Aquatic Dance Fly 1
Acroneuria Golden Stoneflies 1
Nemouridae Nemourid Stonefly 1
Rheosmittia Non-Biting Midges 1
Chaetocladius Non-Biting Midges 1
Cricotopus Non-Biting Midges 1
Diamesinae 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.