MBSS Site Summary for: SWAN-204-B-2008

Site Photos

Field photo showing stream conditions at site SWAN-204-B-2008-1 (Opens in a new window) Field photo showing stream conditions at site SWAN-204-B-2008-2 (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 3/12/2008 and again in the summer on 6/12/2008.

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 - 3.0 / 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 6,872 acres Cows standing in a stream at a site with high agricultural land use. Cows survey the sampling procedure at this extreme example of a highly agriculturalized site.
Urban Land Use 9.7 %
Agricultural Land Use 48.5 %
Forested Land Use 41.1 %


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

Physical Stream Habitat
Instream Habitat 12/20 (Suboptimal)
Epifaunal Substrate 12/20 (Suboptimal)
Velocity/Depth Diversity 11/20 (Suboptimal)
Pool Quality
Pool Extent = 58 meters 		11/20 (Suboptimal)
Riffle Quality
Riffle Extent = 17 meters 		11/20 (Suboptimal)
Shading 85 %
Embeddedness 15 %


Stream Water Quality:
Water temperature 20 ° C
Dissolved oxygen (DO) 7.6 mg/L
pH (lab) 7.89
Conductivity 221 µmho/cm
Alkalinity
(acid neutralizing capacity) 		503.5 µeq/L
Dissolved organic carbon (DOC) 2.4128 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
American Eel 81
Tessellated Darter 63
White Sucker 42
Creek Chub 41
Satinfin Shiner 37
Rosyside Dace 35
Margined Madtom 26
Cutlip Minnow 24
Common Shiner 19
Blacknose Dace 17
Swallowtail Shiner 15
Redbreast Sunfish 7
Green Sunfish 3
River Chub 1
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
American Bullfrog
Northern Green Frog
Northern Two-Lined Salamander
Wood Frog

Crayfish:
Cambarus bartonii bartonii
Orconectes limosus

Exotic Plants:
Garlic Mustard
Japanese Barberry
Japanese Honeysuckle
Japanese Stiltgrass
Mile-A-Minute
Multiflora Rose
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Orthocladius Non-Biting Midges 30
Prostoia Spring Stonefly 12
Hydrobaenus Midge 11
Cheumatopsyche Net-Spinning Caddisfly 8
Crangonyx Amphipod 7
Naididae Aquatic Worm 7
Chimarra Fingernet Caddisfly 6
Stenelmis Beetle 4
Strophopteryx Early Brown Stonefly 4
Psephenus Water Penny 4
Pisidiidae Pill Clam 4
Parametriocnemus Non-Biting Midges 3
Prosimulium Black Fly 3
Prostoma Freshwater Nemertean (Ribbon Worm) 3
Clinocera Aquatic Dance Fly 3
Nemouridae Nemourid Stonefly 2
Hydropsyche Net-Spinning Caddisfly 2
Maccaffertium March Brown And Cahill Mayfly 2
Caenis Mayfly 2
Diamesa Bloodworm 2
Potthastia Non-Biting Midges 2
Microcylloepus Riffle Beetle 2
Isonychia Slate Drake Mayfly 2
Tvetenia Non-Biting Midges 2
Polycentropus Tube Maker Caddisfly 2
Ephemerellidae Spiny Crawler Mayfly 1
Rheocricotopus Non-Biting Midges 1
Paraleptophlebia Blue Quill Mayfly 1
Diamesinae Non-Biting Midges 1
Eukiefferiella 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.