MBSS Site Summary for: PRFR-112-R-2004


Located on LITTLE CATOCTIN CR UT 2 in the Potomac River FR Cnty watershed, 8-digit code: 02140301.
This stream was visited in the spring on 3/16/2004 and again in the summer on 8/3/2004.

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 N R
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 385 acres A stream flowing through a densely forested area. An example of a forested stream.
Urban Land Use 0 %
Agricultural Land Use 43 %
Forested Land Use 55 %


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

Physical Stream Habitat
Instream Habitat not sampled
Epifaunal Substrate not sampled
Velocity/Depth Diversity not sampled
Pool Quality not sampled
Riffle Quality not sampled
Shading not sampled
Embeddedness not sampled


Stream Water Quality:
Water temperature 20.8 ° C
Dissolved oxygen (DO) 5.6 mg/L
pH (lab) 7.28
Conductivity 121 µmho/cm
Alkalinity
(acid neutralizing capacity) 		374 µeq/L
Dissolved organic carbon (DOC) 3.1 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:
Fish data is unavailable or no fish observed.

Amphibians and Reptiles:
American Bullfrog

Crayfish:
No crayfish noted.

Exotic Plants:
No exotic plants noted.
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Thienemannimyia group Non-Biting Midges 32
Parametriocnemus Non-Biting Midges 25
Ameletus Combmouthed Minnow Mayfly 21
Physa Air-Breathing Freshwater Snail 8
Micropsectra Non-Biting Midges 7
Diplectrona Net-Spinning Caddisfly 5
Caecidotea Isopod 4
Orthocladius Non-Biting Midges 4
Amphinemura Spring Stonefly 4
Perlodidae Perlodid Stonefly 3
Nigronia Megaloptera (Dark Fishfly) 2
Pycnopsyche Great Autumn Brown Sedge Caddisfly 2
Ephemerella Sulphur Mayfly 2
Corynoneura Non-Biting Midges 2
Rheosmittia Non-Biting Midges 2
Hydroporus Water Beetle 1
Tipula Crane Fly 1
Tipulidae Cranefly 1
Orthocladiinae Midge 1
Brillia Non-Biting Midges 1
Leptophlebiidae Pronggilled Mayfly 1
Baetidae Small Minnow Mayfly 1
Paraphaenocladius 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.