MBSS Site Summary for: LOGU-305-R-2016

Site Photos

Field photo showing stream conditions at site LOGU-305-R-2016_Midpoint looking downstream (Opens in a new window) Field photo showing stream conditions at site LOGU-305-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 3/23/2016 and again in the summer on 6/14/2016.

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 Good - 4.3 / 5.0
Benthic IBI Poor - 1.3 / 5.0

Land Use

Land use can provide important information for determining stream health.
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Catchment area 5,147 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 14.5 %
Agricultural Land Use 60 %
Forested Land Use 22.8 %


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 12/20 (Suboptimal)
Velocity/Depth Diversity 10/20 (Marginal)
Pool Quality
Pool Extent = 65 meters 		15/20 (Suboptimal)
Riffle Quality
Riffle Extent = 10 meters 		3/20 (Poor)
Shading 60 %
Embeddedness 95 %
The embeddedness, a measure of silt on the stream bottom, was 95%. This is relatively high, and may exclude some biota.


Stream Water Quality:
pH (lab) 8.11
Alkalinity
(acid neutralizing capacity) 		1630.2 µeq/L
Dissolved organic carbon (DOC) 0.8159 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
White Sucker 327
Tessellated Darter 97
Fathead Minnow 82
Rosyside Dace 82
Creek Chub 69
American Eel 60
Blacknose Dace 35
Cutlip Minnow 25
Brown Trout 11
Green Sunfish 7
Bluegill 3
Goldfish 1
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
Northern Two-Lined Salamander

Crayfish:
No crayfish noted.

Exotic Plants:
Daylily
Garlic Mustard
Japanese Honeysuckle
Japanese Hops
Japanese Knotweed
Japanese Stiltgrass
Mile-A-Minute
Multiflora Rose
Oriental Bittersweet
Privet
Wineberry
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Orthocladius Non-Biting Midges 27
Tanytarsus Non-Biting Midges 10
Thienemannimyia Group Non-Biting Midges 10
Crangonyx Amphipod 9
Orthocladiinae Midge 7
Paratanytarsus Non-Biting Midges 5
Micropsectra Non-Biting Midges 5
Caecidotea Isopod 5
Cricotopus Non-Biting Midges 4
Dicrotendipes Non-Biting Midges 4
Polypedilum Non-Biting Midges 3
Hydrobaenus Midge 2
Polycentropus Tube Maker Caddisfly 2
Phaenopsectra Non-Biting Midges 2
Ablabesmyia Non-Biting Midge 2
Chironomini Non-Biting Midge 2
Corynoneura Non-Biting Midges 1
Hyalella Amphipod 1
Tubificidae Aquatic Worm 1
Diamesa Bloodworm 1
Nanocladius Non-Biting Midges 1
Oecetis Long-Horned Caddisfly 1
Rheocricotopus Non-Biting Midges 1
Tanytarsini Non-Biting Midges 1
Trissopelopia Non-Biting Midges 1
Tvetenia Non-Biting Midges 1
Anafroptilum Small Minnow Mayfly 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.