MBSS Site Summary for: LOGU-211-R-2016

Site Photos

Field photo showing stream conditions at site LOGU-211-R-2016_Midpoint looking downstream (Opens in a new window) Field photo showing stream conditions at site LOGU-211-R-2016_Midpoint looking upstream (Opens in a new window)

Located on Long Green Creek in the Lower Gunpowder Falls watershed, 8-digit code: 02130802.
This stream was visited in the spring on 4/11/2016 and again in the summer on 6/8/2016.

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 Fair - 3.0 / 5.0

Land Use

Land use can provide important information for determining stream health.
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Catchment area 1,114 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 14.9 %
Agricultural Land Use 55.6 %
Forested Land Use 24.7 %


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 14/20 (Suboptimal)
Velocity/Depth Diversity 13/20 (Suboptimal)
Pool Quality
Pool Extent = 53 meters 		13/20 (Suboptimal)
Riffle Quality
Riffle Extent = 51 meters 		12/20 (Suboptimal)
Shading 20 %
Embeddedness 30 %


Stream Water Quality:
pH (lab) 7.76
Alkalinity
(acid neutralizing capacity) 		1346.8 µeq/L
Dissolved organic carbon (DOC) 0.9252 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 9 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
Blacknose Dace 187
Rosyside Dace 66
Creek Chub 27
American Eel 16
Tessellated Darter 13
Longnose Dace 6
White Sucker 6
Fathead Minnow 2
Brown Trout 1
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
Northern Two-Lined Salamander
Northern Water Snake

Crayfish:
No crayfish noted.

Exotic Plants:
Mile-A-Minute
Multiflora Rose
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Orthocladius Non-Biting Midges 29
Polypedilum Non-Biting Midges 18
Hydropsyche Net-Spinning Caddisfly 14
Diamesa Bloodworm 8
Stenelmis Beetle 7
Ephemerella Sulphur Mayfly 7
Thienemannimyia Group Non-Biting Midges 6
Orthocladiinae Midge 5
Cheumatopsyche Net-Spinning Caddisfly 4
Simulium Black Fly 3
Baetis Blue-Winged Olive Mayfly 3
Antocha Crane Fly 2
Maccaffertium March Brown And Cahill Mayfly 2
Micropsectra Non-Biting Midges 2
Optioservus Riffle Beetle 2
Tvetenia Non-Biting Midges 1
Diphetor Mayfly 1
Teloganopsis Mayfly 1
Chimarra Fingernet Caddisfly 1
Acroneuria Golden Stoneflies 1
Chironomini Non-Biting Midge 1
Diamesinae Non-Biting Midges 1
Sympotthastia Non-Biting Midges 1
Tanypodinae Non-Biting Midges 1
Tanytarsus Non-Biting Midges 1
Thienemanniella 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.