This document discusses studies of the Bolin and Morgan Creek watersheds in North Carolina. It outlines the goals of assessing stream health, identifying water quality and habitat stressors, and finding sources of pollution. Biological and water quality sampling methods are described, including the collection of insects, fish, algae, and water samples. The results found some concerns like low dissolved oxygen, metals like copper, and pesticides, but nutrients were generally okay. Assessments also identified needs like erosion control and riparian buffer restoration. Ongoing monitoring is recommended to track long term trends in stream health.
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Rob Breeding Bolin Creek: Healing Our Local Waterways
1. Our Local Streams,
Bolin & Morgan Creeks
Can We Heal Our Local Waterways?
Rob Breeding, Eastern Watershed Planner
February 11, 2012
2. Little Creek WARP &
Morgan Creek LWP Studies
Can We Heal Our Local Waterways?
Rob Breeding, Eastern Watershed Planner
February 11, 2012
4. Stream Assessment for
WARP
GOALS
? Determine the best methods
for assessing the health of
NC streams and aquatic
habitat conditions
? Identify water quality and
habitat stressors in Bolin &
Booker Creek watersheds
? Identify sources
5. Stream Assessment for
WARP
GOALS
? Determine the best methods
for assessing the health of
NC streams and aquatic
habitat conditions
? Identify water quality and
habitat stressors in Bolin &
Booker Creek watersheds
? Identify sources
6. Stream Assessment for
WARP
GOALS
? Determine the best methods
for assessing the health of
NC streams and aquatic
habitat conditions
? Identify water quality and
habitat stressors in Bolin &
Booker Creek watersheds
? Identify sources
7. Stream Assessment for
WARP
GOALS
? Determine the best methods
for assessing the health of
NC streams and aquatic
habitat conditions
? Identify water quality and
habitat stressors in Bolin &
Booker Creek watersheds
? Identify sources
8. Water Quality Assessment
METHODS
? Biological Sampling
¨C Insects
¨C Fish
¨C Algae
? Water Quality Sampling
¨C General Parameters
¨C Nutrients
¨C Toxicity
9. Water Quality Assessment
METHODS
? Biological Sampling
¨C Insects
¨C Fish
¨C Algae
? Water Quality Sampling
¨C General Parameters
¨C Nutrients
¨C Toxicity
10. Water Quality Assessment
METHODS
? Biological Sampling
¨C Insects
¨C Fish
¨C Algae
? Water Quality Sampling
¨C General Parameters
¨C Nutrients
¨C Toxicity
11. Water Quality Assessment
METHODS
? Biological Sampling
¨C Insects
¨C Fish
¨C Algae
? Water Quality Sampling
¨C General Parameters
¨C Nutrients
¨C Toxicity
12. Water Quality Assessment
METHODS
? Biological Sampling
¨C Insects
¨C Fish
¨C Algae
? Water Quality Sampling
¨C General Parameters
¨C Nutrients
¨C Toxicity
13. Water Quality Assessment
METHODS
? Biological Sampling
¨C Insects
¨C Fish
¨C Algae
? Water Quality Sampling
¨C General Parameters
¨C Nutrients
¨C Toxicity
15. Insect Sampling
? Diagnostic for all instream ecosystem
functions for a reach or tributary
? Detailed interpretation can suggest likely
stressors
? Potential for long-term water quality trend
assessment
20. Fish Sampling
? Diagnostic for all instream ecosystem
functions for a reach or tributary
? Detailed interpretation can suggest
stressors and can indicate post-project
improvement
? Potential for trend assessment
22. Water Quality Sampling
METHODS
? Collect field samples
? Analyze in laboratory
? Compare
concentrations to
benchmarks and
references
23. Water Quality Sampling
METHODS
? Storm water &
baseflow
? Wide array of
chemicals and classes
24. Water Quality Sampling
? Directly measures inputs from surrounding land
use
? Detailed interpretation can help explain
biological condition
? Used to support model development
? Potential for long-term trend analysis
25. What We ¹ó´Ç³Ü²Ô»å¡
? Dissolved Oxygen¡ªslightly worse in lower
Bolin but not a smoking gun
? Nutrients¡ªNitrogen and Phosphorus OK
? Some Metals¡ªCopper of concern in few storm
samples; iron, manganese, & aluminum high
but likely background ¨Dnoise¡¬
? Some Pesticides¡ªAtrazine & DDT at low
levels
26. Toxicity Testing
? Multitaxa toxicity screening of
water diagnoses problems
difficult to address with
traditional restoration projects
? Sediment testing can show
long-term or historic issues
? Tox testing helps explain poor
bio community condition
? Done in conjunction with other
water quality sampling
27. The Morgan Creek LWP
GOALS
? Characterize the health of
the streams and aquatic
habitat conditions
? Identify water quality and
habitat stressors in
subwatersheds
? Inform the management
recommendation process
29. Riparian Assessment Results
? Assessments and Project Yield
? 40+ reaches assessed
? 21 potential restoration and/or
enhancement projects in Bolin
? 5 potential restoration reaches in
Little Creek
? Observations
? Bank erosion
? Lack of woody buffer
? Channel modification
? Sedimentation
? Degraded aquatic habitat
? Utility crossings
30. More Recent Information¡
? Carrboro sponsors Benthic
Macroinvertebrate sampling
annually¡ªdata suggests possible
declines in developing areas
? EarthTech Stormwater Retrofit
Study
? Division of Water Quality
Basinwide Assessment & Basin
Plan
31. What the Future Holds¡
? ?????
? Continued Aquatic Insect
Community Sampling
? Continued DWQ Basinwide
Assessment and Planning
? DWQ Restoration
Watershed Support