Key Features of this Report
presents the findings of Onondaga
Monitoring Program (AMP) for 2010. The
Countys annual monitoring program is designed to evaluate compliance with
water quality standards and trends as improvements to the wastewater collection
and treatment infrastructure are completed.
Each year, the Onondaga County Department of Water Environment
Protection collects extensive water quality and biological data to characterize
Onondaga Lake and its watershed. This summary report of 2010 conditions
provides a synopsis of the extensive data to the many stakeholders interested
in Onondaga Lake.
The 2010 report
was prepared and distributed as an electronic document. Key results and supporting tables and
graphics are included in the main document, with links to supporting tables,
technical reports and graphics in an electronic library. The report and supporting files are available
on CD upon request and on the Onondaga
County web site www.ongov.net/wep.
Throughout the document, the reader will find hyperlinks to additional
detailed tables, graphs and related reports. These hyperlinks appear as
underlined words in the print copy. Simple definitions of many of the technical
terms are included (roll the computer mouse over a highlighted term). These words and phrases will appear as shaded
in the print copy. Maps and figures can be viewed at higher magnification by
holding down the ctrl key and scrolling with the mouse wheel.
Once in the library of supporting documents, the reader can
navigate back to the main report using browser navigation tools such as the
back arrow. There are more than 200 supporting tables and graphics in the
library of supporting materials. While
each hyperlink has been checked, it is possible that some features will not be
enabled on every computers
operating system. Feedback on the
functionality of the electronic features of the document is welcome. Please contact JeannePowers@ongov.net with comments.
of Contents- AMP 2010
Key Features of this Report
Section 1. Introduction to the AMP
and Best Use
Objectives and Design
Consent Judgment Milestones
to address legacy industrial pollution.
of metrics to measure and report progress
Section 2. Onondaga Lake and Watershed
size and hydrology
Section 3. Onondaga County Actions
Section 4. Tributary Results: 2010 Results and
4.2.1 Compliance with ambient water quality standards
4.2.4 Tributary macroinvertebrates
Section 5. Onondaga Lake Water Quality: 2010
Results and Trends
5.3.3 Secchi Disk Transparency
5.3.4 Trophic State Index
N and nitrite N
condition and trends
5.7.1 Nearshore water clarity trends
5.7.2 Fecal coliform bacteria trends
in Metro improvements and lake response
Section 6. Biology and Food Web: 2010 Results
producers- Algae and Macrophytes
and dreissenid mussels
6.4.1 Richness and Diversity
6.4.2 Reproductive Success
6.4.3 Recreational Fishery
6.4.4 Fish Size Largemouth Bass
6.4.5 Fish Size Smallmouth Bass
6.4.6 Fish Size Sunfish
6.4.7 Fish Size Yellow Perch and Brown Bullhead
6.4.8 Angler Catch Rates of Bass
information regarding the fish community
assessment of the food web
Section 7. Seneca River: 2010 Conditions and
Section 8. Progress with related initiatives
Section 9. Emerging issues and recommendations
Section 10. Acknowledgements
Section 11. Literature cited
List of Acronyms and Glossary of Terms
Library of Supporting Materials
LIST OF TABLES
Table EX- 1. Summary of Metrics, Onondaga Lake 2010
Table 1‑1. Overview of AMP data analysis and
Table 1‑2. Metro compliance schedule.
Table 1‑3. CSO compliance schedule.
Table 3‑1. Summary (timeline) of significant
milestones and pollution abatement actions and lake water quality conditions.
Table 3‑2. CSO remedial projects (gray
Table 4‑1. Summary of tributary compliance
with ambient water quality standards, 2010.
4‑2. Flow-weighted average concentration of selected parameters in Onondaga
Lake tributaries, 2010.
Table 4‑3. Load
of selected nutrients, salts and bacteria to Onondaga Lake, 2010.
Table 4‑4. Percent annual loading
contribution by gauged inflow, 2010.
Table 4‑5. Tributary and Metro Total
Phosphorus (TP) Loading to Onondaga Lake, pre-ACJ and post-Actifloฎ implementation.
Table 4‑6. Tributary and Metro Soluble
Reactive Phosphorus (SRP) Loading to Onondaga Lake, pre-ACJ and post-Actifloฎ implementation.
Table 4‑7. Tributary and Metro Total
Dissolved Phosphorus (TDP) Loading to Onondaga Lake, pre-ACJ and post-Actifloฎ implementation.
Table 4‑8. Ten-year trends in tributary
concentrations (2001-2010) summary.
Table 4‑9. Ten-year trends in tributary
loading (2001-2010) summary.
Table 4‑10. Incidence
of chironomid deformities, Onondaga Lake tributaries, 2010.
Lake compliance with ambient water quality standards and guidance
5‑2. Percent of Ammonia Measurements in Compliance with Ambient Water Quality
Standards, Onondaga Lake, 1998-2010.
Table 5‑3. Summary
of trends in lake concentrations, 2001-2010.
6‑1. Species list of aquatic macrophytes observed in Onondaga Lake
Table 6‑2. Mean index value and
corresponding NYSDEC water quality assessment score from petite Ponar samples
(with dreissenid mussels included in the sample) for sites in Onondaga Lake in
Table 6‑3. Fish species identified in
Onondaga Lake, 2000-2010.
7‑1. Summary of non-compliance with
selected AWQS, Three Rivers, 2010.
LIST OF FIGURES
Figure EX- 1. Daily average discharge of Ammonia-N
to Onondaga Lake from Metro, 1990-2010.
Figure EX- 2. Daily average phosphorus (TP) loading
from Metro, 1990-2010.
Figure EX- 3. Annual average ammonia-N
concentrations, Onondaga Lake upper waters (0-3 m), 1990-2010.
Figure EX- 4. Ammonia input to Onondaga Lake,
1990-2004 and 2010.
Figure EX- 5. Average total phosphorus
concentration, June 1 Sept 30, Onondaga Lake upper waters (0-3 m), 1990-2010.
Figure EX- 6. Total phosphorus input to Onondaga
Lake, 1990-2004 and 2010.
Figure EX- 7. Summer algal bloom frequency, Onondaga
Lake, 1990 2010.
Figure EX- 8. Volume-days of anoxia (dissolved oxygen
less than 0.5 mg/l) and hypoxia (dissolved oxygen less than 2 mg/l), Onondaga
Figure EX- 9. Minimum DO concentration in upper
waters (0-3 m) during fall turnover (October) in Onondaga Lake, 1990 2010.
Figure EX- 10. Aquatic plant coverage, 2000 and
Figure EX- 11. Number of macrophyte species
identified in Onondaga Lake, 2000, 2005 and 2010.
Figure EX- 12. Bass (smallmouth and largemouth
adults) captured by electrofishing in Onondaga Lake, 2001 2010.
Figure EX- 13. Average zooplankton size (all
taxa combined) and alewife catch rates from electrofishing, 2000-2010, Onondaga
Figure EX- 14. Mean Secchi disk depth
measurements and mean zooplankton size, Onondaga Lake, 1999 2010.
Figure 1‑1. Tributary
and lake regulatory classifications and subwatershed boundaries.
Figure 1‑2. Map
of monitoring locations, Onondaga Lake and tributaries.
Figure 2‑1. Annual
average inflows to Onondaga Lake, 2001-2010.
Figure 2‑2. Land
cover classification map.
Figure 2‑3. Bathymetric
Figure 3‑1. Map
of CSO areas.
Figure 4‑1. Fecal
coliform bacteria abundance, Onondaga Lake tributaries, 2010.
Figure 4‑2. Watershed
(non-Metro) TP annual load and annual rainfall, 1990-2010.
Figure 4‑3. Biological
assessment designations, Onondaga Lake tributaries, 2000- 2010.
Figure 4‑4. Metro
NH3-N, 2010 effluent concentration compared to permit limits.
Figure 4‑5. Metro
TP, 2010 effluent concentration compared to permit limit.
5‑1. Chlorophyll-a concentration, January to December, 1998-2010.
5‑2. TP and chlorophyll-a concentrations in Onondaga Lake compared with
selected regional lakes.
5‑3. Secchi Disk transparency, Onondaga Lake South Deep, 2010.
5‑4. TSI conditions based on summer (June 1 September 30) data, 1998-2010.
Figure 5‑5. Representation
of the earliest dates of anoxia occurring at 15m depth in Onondaga Lake during
the years from each time period (1990-1998 and 2007-2010).
Figure 5‑6. Fecal
coliform bacteria compliance, Onondaga Lake nearshore stations, April October
Figure 5‑7. TP
loading (water year), all external sources and summer TP concentration Onondaga
Lake upper waters, 1990 2010.
Figure 5‑8. Relationship
of Metro TP loading and lake summer TP (panel A-linear regression)
Figure 5‑9. Onondaga
Lake upper waters total nitrogen to total phosphorus (N:P) ratio, 1998‐2010.
Figure 5‑10. LWL
concentrations of SRP, NO3-N and DO, 2006-2010.
6‑1. Reduction in the Onondaga Lake phytoplankton standing crop, 1998-2010.
6‑2. Proportional biomass of phytoplankton divisions, 2010.
6‑3. Phytoplankton community structure and biomass, 2010.
6‑4. Macrophyte distribution, 2000 2010.