MBSS Site Summary for: CDAM-212-R-2004

Site Photos

Field photo showing stream conditions at site CDAM-212-R-2004-66 (Opens in a new window) Field photo showing stream conditions at site CDAM-212-R-2004-67 (Opens in a new window)

Located on PEDDLER RUN in the Conowingo Dam Susq R watershed, 8-digit code: 02120204.
This stream was visited in the spring on 3/29/2004 and again in the summer on 8/4/2004.

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 - 3.3 / 5.0
Benthic IBI Good - 4.0 / 5.0

Land Use

Land use can provide important information for determining stream health.
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Catchment area 1,452 acres A stream flowing through a densely forested area. An example of a forested stream.
Urban Land Use 6 %
Agricultural Land Use 43 %
Forested Land Use 50 %


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 16/20 (Optimal)
Velocity/Depth Diversity 14/20 (Suboptimal)
Pool Quality
Pool Extent = 18 meters 		15/20 (Suboptimal)
Riffle Quality
Riffle Extent = 60 meters 		15/20 (Suboptimal)
Shading 85 %
Embeddedness 15 %


Stream Water Quality:
Water temperature 23.2 ° C
Dissolved oxygen (DO) 7.1 mg/L
pH (lab) 7.75
Conductivity 189 µmho/cm
Alkalinity
(acid neutralizing capacity) 		778.4 µeq/L
Dissolved organic carbon (DOC) 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 11 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
Blacknose Dace 294
Rosyside Dace 100
Creek Chub 74
White Sucker 20
Tessellated Darter 17
Swallowtail Shiner 5
Redbreast Sunfish 4
Brown Trout 2
Bluegill 1
Largemouth Bass 1
Longnose Dace 1
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
American Bullfrog
Northern Red Salamander
Northern Two-Lined Salamander

Crayfish:
No crayfish noted.

Exotic Plants:
Japanese Honeysuckle
Japanese Stiltgrass
Multiflora Rose
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Cheumatopsyche Net-Spinning Caddisfly 33
Gammarus Amphipod 19
Antocha Crane Fly 15
Amphinemura Spring Stonefly 14
Orthocladius Non-Biting Midges 11
Diamesa Bloodworm 11
Ephemerella Sulphur Mayfly 6
Hydropsyche Net-Spinning Caddisfly 5
Chimarra Fingernet Caddisfly 5
Ameletus Combmouthed Minnow Mayfly 3
Prosimulium Black Fly 3
Naididae Aquatic Worm 3
Leuctridae Rolledwinged Stonefly 3
Lumbriculidae Worm 2
Prostoia Spring Stonefly 2
Rheosmittia Non-Biting Midges 2
Tvetenia Non-Biting Midges 2
Perlodidae Perlodid Stonefly 2
Anchytarsus Beetle 2
Clinocera Aquatic Dance Fly 2
Perlidae Common Stonefly 2
Acroneuria Golden Stoneflies 2
Simulium Black Fly 1
Neophylax Caddisfly 1
Spirosperma Aquatic Oligochaete Worm 1
Stygobromus Amphipod 1
Micrasema 1
Sublettea 1
Leptophlebiidae Pronggilled Mayfly 1
Sympotthastia Non-Biting Midges 1
Cricotopus Non-Biting Midges 1
Diplectrona Net-Spinning Caddisfly 1
Psychomyia Trumpet-Net Caddisfly 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.