MBSS Site Summary for: LOGU-201-X-2011

Site Photos

Field photo showing stream conditions at site LOGU-201-X-2011-1 (Opens in a new window) Field photo showing stream conditions at site LOGU-201-X-2011-2 (Opens in a new window)

Located on COWEN RUN in the Lower Gunpowder Falls watershed, 8-digit code: 02130802.
This stream was visited in the spring on 3/2/2011 and again in the summer on 6/17/2011.

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 Fair - 3.0 / 5.0

Land Use

Land use can provide important information for determining stream health.
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Catchment area 2,092 acres A stream flowing through a densely forested area. An example of a forested stream.
Urban Land Use 19.3 %
Agricultural Land Use 26.7 %
Forested Land Use 51.6 %


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

Physical Stream Habitat
Instream Habitat 13/20 (Suboptimal)
Epifaunal Substrate 7/20 (Marginal)
Velocity/Depth Diversity 12/20 (Suboptimal)
Pool Quality
Pool Extent = 42 meters 		14/20 (Suboptimal)
Riffle Quality
Riffle Extent = 50 meters 		14/20 (Suboptimal)
Shading 40 %
Embeddedness 60 %
The embeddedness, a measure of silt on the stream bottom, was 60%. This is relatively high, and may exclude some biota.


Stream Water Quality:
pH (lab) 8.125
Alkalinity
(acid neutralizing capacity) 		2192.2 µeq/L
Dissolved organic carbon (DOC) 1.1853 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 12 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
Longnose Dace 107
American Eel 55
Blacknose Dace 38
Creek Chub 36
White Sucker 29
Redbreast Sunfish 4
River Chub 4
Sea Lamprey 4
Margined Madtom 3
Rosyside Dace 3
Tessellated Darter 3
Rainbow Trout 1
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
Northern Two-Lined Salamander

Crayfish:
Orconectes virilis

Exotic Plants:
Japanese Honeysuckle
Japanese Knotweed
Japanese Stiltgrass
Mile-A-Minute
Multiflora Rose
Wineberry
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
NEMOURIDAE Nemourid Stonefly 13
Hydropsyche Net-Spinning Caddisfly 13
Orthocladius Non-Biting Midges 11
Prostoia Spring Stonefly 11
Cheumatopsyche Net-Spinning Caddisfly 10
Sympotthastia Non-Biting Midges 7
Ephemerella Sulphur Mayfly 6
Optioservus Riffle Beetle 6
Chimarra Fingernet Caddisfly 4
Clinocera Aquatic Dance Fly 3
Neophylax Caddisfly 2
PERLIDAE Common Stonefly 2
Antocha Crane Fly 2
Strophopteryx Early Brown Stonefly 2
Thienemanniella Non-Biting Midges 2
Stygobromus Amphipod 2
Rheotanytarsus Non-Biting Midges 2
Parametriocnemus Non-Biting Midges 1
Tvetenia Non-Biting Midges 1
Psephenus Water Penny 1
Stenelmis Beetle 1
Prosimulium Black Fly 1
Synorthocladius 1
Crangonyx Amphipod 1
Gammarus Amphipod 1
Acroneuria Golden Stoneflies 1
Diplectrona Net-Spinning Caddisfly 1
Corynoneura Non-Biting Midges 1
Eukiefferiella Non-Biting Midges 1
Microtendipes Non-Biting Midges 1
Nanocladius 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.