MBSS Site Summary for: GEOR-106-R-2003

Site Photos

Field photo showing stream conditions at site GEOR-106-R-2003-1 (Opens in a new window) Field photo showing stream conditions at site GEOR-106-R-2003-2 (Opens in a new window) Field photo showing stream conditions at site GEOR-106-R-2003-3 (Opens in a new window) Field photo showing stream conditions at site GEOR-106-R-2003-4 (Opens in a new window)

Located on MILL RUN (GEOR CR) in the Georges Creek watershed, 8-digit code: 02141004.
This stream was visited in the spring on 4/1/2003 and again in the summer on 8/11/2003.

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 - 1.0 / 5.0
Benthic IBI Fair - 3.3 / 5.0

Land Use

Land use can provide important information for determining stream health.
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Catchment area 627 acres A highly channelized urban stream with concrete banks. An example of a highly channelized urban stream.
Urban Land Use 4 %
Agricultural Land Use 2 %
Forested Land Use 94 %


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 13/20 (Suboptimal)
Velocity/Depth Diversity 8/20 (Marginal)
Pool Quality
Pool Extent = 20 meters 		8/20 (Marginal)
Riffle Quality
Riffle Extent = 57 meters 		14/20 (Suboptimal)
Shading 95 %
Embeddedness 35 %


Stream Water Quality:
Water temperature 17 ° C
Dissolved oxygen (DO) 9.1 mg/L
pH (lab) 6.31
Conductivity 32 µmho/cm
Alkalinity
(acid neutralizing capacity) 		22.4 µeq/L
Dissolved organic carbon (DOC) 1.5 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 1 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
No Fish Observed 0
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
Red-Spotted Newt

Crayfish:
Cambaridae

Exotic Plants:
No exotic plants noted.
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Leuctra  Rolled-Winged Stonefly 22
Prosimulium Black Fly 18
Amphinemura Spring Stonefly 9
Ameletus Combmouthed Minnow Mayfly 7
Diplectrona Net-Spinning Caddisfly 5
Neophylax Caddisfly 4
Ostrocerca Stonefly 4
Nemouridae Nemourid Stonefly 3
Micropsectra Non-Biting Midges 3
Parametriocnemus Non-Biting Midges 3
Perlodidae Perlodid Stonefly 3
Peltoperlidae Roachlike Stonefly 2
Nigronia Megaloptera (Dark Fishfly) 2
Chaetocladius Non-Biting Midges 2
Eukiefferiella Non-Biting Midges 2
Stegopterna Black Fly 2
Philopotamidae Fingernet Caddisfly 2
Chloroperlidae Green Stonefly 2
Ephemerella Sulphur Mayfly 2
Lumbriculidae Worm 1
Caecidotea Isopod 1
Wormaldia Fingernet Caddisfly 1
Acroneuria Golden Stoneflies 1
Perlidae Common Stonefly 1
Tipulidae Cranefly 1
Microtendipes 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.