MBSS Site Summary for: CATO-407-R-2017

Site Photos

Field photo showing stream conditions at site CATO-407-R-2017-MidpointDownstream (Opens in a new window) Field photo showing stream conditions at site CATO-407-R-2017-MidpointUpstream (Opens in a new window) Field photo showing stream conditions at site CATO-407-R-2017-MouthOfBroadRunAtMidpoint (Opens in a new window)

Located on Catoctin Creek in the Catoctin Creek watershed, 8-digit code: 02140305.
This stream was visited in the spring on 3/13/2017 and again in the summer on 7/21/2017.

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 - 4.7 / 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 3,310 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 12.6 %
Agricultural Land Use 65.1 %
Forested Land Use 21.9 %


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 18/20 (Optimal)
Velocity/Depth Diversity 17/20 (Optimal)
Pool Quality
Pool Extent = 55 meters
15/20 (Suboptimal)
Riffle Quality
Riffle Extent = 50 meters
15/20 (Suboptimal)
Shading 40 %
Embeddedness 45 %
Several measures of instream habitat were considered 'Optimal' at this location.


Stream Water Quality:

pH (lab) 9.06
Alkalinity
(acid neutralizing capacity)
909.9 µeq/L
Dissolved organic carbon (DOC) 1.7838 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 27 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
Notropis Sp. 874
Bluntnose Minnow 607
Swallowtail Shiner 607
Central Stoneroller 578
Silverjaw Minnow 426
Longnose Dace 347
Spottail Shiner 327
Rainbow Darter 150
Greenside Darter 84
Smallmouth Bass 79
White Sucker 71
Golden Redhorse 66
Yellow Bullhead 63
Fantail Darter 49
Rosyface Shiner 44
Margined Madtom 42
Redbreast Sunfish 41
Northern Hogsucker 38
Common Shiner 23
Tessellated Darter 22
Cutlip Minnow 18
Blacknose Dace 14
Fallfish 10
Rock Bass 3
Green Sunfish 2
American Eel 1
Bluegill 1
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:

Fowler's Toad
Northern Green Frog
Northern Water Snake

Crayfish:

Orconectes obscurus
Orconectes virilis

Exotic Plants:

Japanese Honeysuckle
Japanese Hops
Japanese Stiltgrass
Multiflora Rose
Wineberry
 

Benthic Macroinvertebrates:

Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
ORTHOCLADIUS Non-Biting Midges 34
HYDROBAENUS Midge 16
ORTHOCLADIINAE Midge 9
CHEUMATOPSYCHE Net-Spinning Caddisfly 6
ALLOCAPNIA Small Winter Stonefly 6
CORYNONEURA Non-Biting Midges 5
RHEOTANYTARSUS Non-Biting Midges 4
ISONYCHIA Slate Drake Mayfly 3
EUKIEFFERIELLA Non-Biting Midges 3
DIAMESA Bloodworm 3
CRANGONYX Amphipod 3
PROSIMULIUM Black Fly 2
MACCAFFERTIUM March Brown And Cahill Mayfly 2
ABLABESMYIA Non-Biting Midge 2
EPHEMERELLA Sulphur Mayfly 2
TANYTARSUS Non-Biting Midges 2
POLYPEDILUM Non-Biting Midges 2
RHEOCRICOTOPUS Non-Biting Midges 2
PARAPHAENOCLADIUS Non-Biting Midges 1
PHAENOPSECTRA Non-Biting Midges 1
TVETENIA Non-Biting Midges 1
ZAVRELIMYIA Non-Biting Midges 1
TANYTARSINI Non-Biting Midges 1
CAENIS Mayfly 1
SIMULIUM Black Fly 1
PERLIDAE Common Stonefly 1
ANTOCHA Crane Fly 1
PARAKIEFFERIELLA European Non-Biting Midge 1
STENOCHIRONOMUS European Non-Biting Midge 1
PYCNOPSYCHE Great Autumn Brown Sedge Caddisfly 1
MICROTENDIPES Non-Biting Midges 1
NANOCLADIUS Non-Biting Midges 1
DICROTENDIPES Non-Biting Midges 1
HYDROPSYCHE Net-Spinning 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.