usgs sentinel lake project with mn dnr fisheries – feb 2011 richard l. kiesling...
TRANSCRIPT
USGS Sentinel Lake Project with
MN DNR Fisheries – Feb 2011
Richard L. Kiesling ([email protected])
Emily Resseger ([email protected])
Jeff Ziegeweid ([email protected])US Geological Survey, MN Water Science Center
2280 Woodale Drive, Mounds View, MN 55112
Agenda for 2/2011 Status Briefing
• Overview of Data Collection Activities– Summary of water quality data collections
from USGS and MPCA– Update on inflow / outflow data activities– Status of modeling: water level &
temperature data first• Discussion of Project Status
– Determine data collect needs for 2011 field season– Discuss Data Gaps
• Profiler vs. sondes at fixed depths vs. ecomapper• DNR / PCA zooplankton data• Freq. of water quality sampling
Sentinel watersheds and lakes as focal points of long-term monitoring and research
USGS Objectives – • Primary object is to develop predictive,
biophysical lake models for three super-sentinel lakes
– Objectives will be accomplished by developing process-based in-lake water quality models
– Models will address the interaction between nutrient cycling, primary production, and trophic dynamics in order to predict responses in deepwater thermal habitats for cold-water fish species
– Models will be used to evaluate the response of super-sentinel lakes to land use and climate scenarios
USGS workingon three lakes:
• Trout Lake
• Elk Lake
• Lake Carlos
Lake Monitoring: physical and chemical parameters
USGS Objectives – Monitoring super-sentinel lakes
• Monitoring of physical and chemical parameters 1. Collect chemistry data necessary to
calibrate carbon-based lake metabolism model - monthly
• Collected Nutrients, major ions, particulate carbon and nitrogen, alkalinity, chlorophyll a, and field parameters monthly April through August
• Laboratory algal growth potential bioassays: July and August Lake sites
2. Collect continuous data• Thermistor chain buoys for all lakes• Continuous water level sensors – pressure
transducers
2010 USGS & MPCA Overall Samples Collected
Data Type Lake Carlos Elk Lake Trout Lake Lake profiles 12 dates (North)/ 9 dates (South) 16 dates 18 dates Lake water quality samples 10 dates (North)/ 12 dates (South) 11 dates 11 dates Inflow/outflow water quality samples 5 dates 5 dates 4 dates 15-minute continuous temperature profiles May-November May-November June-October 15-minutes transducer (water level) data March-November July-November April-October Algal growth bioassays June & August June & August June & August O18-Deuterium isotope samples July & August
2010 USGS Sampling Status Lake Name Sample Type Mar Apr May June July Aug Sep Oct
Lake Carlos Lake- Below Lake Le Homme Dieu x x x
Lake- West of Kecks x x x x Inflow (Lake Darling) x x x x x Inflow (Le Homme Dieu) x x x Inflow (Lake Geneva) x Outflow (Long Prairie) x x x x x Profile x x x x Transducer x x x x x x x x Thermistor chain x x x x x x Trout Lake x x x x x Inflow (Marsh Lake Outlet) x x x x x Inflow (tributary ) x x x x x Outlet x x x x x Profile x x x x Transducer x x x x x x Thermistor chain x x x x Elk Lake x x x x West Spring inflow (Spring 1) x x x x Inflow (Siegfried Creek) x East Spring inflow(Spring 4) x x Outlet x x x x x Profile x x x x Transducer x x x Thermistor chain x x x x x
Lake Carlos North (102) Temperature & Oxygen Lake Carlos South (101) Temperature & Oxygen
0 5 10 15 20 25 300
5
10
15
20
25
30
35
40
45
50
USGS 5/17/10MPCA 5/25/10USGS 6/16/10MPCA 6/24/10MPCA 7/20/10USGS 8/18/10MPCA 8/24/10MPCA 9/22/10USGS 10/7/10MPCA 10/20/10USGS 11/9/10USGS 11/22/10Temp (deg C)
Dept
h (m
)
0 2 4 6 8 10 12 14 160
5
10
15
20
25
30
35
40
45
50
USGS 5/17/10MPCA 5/25/10USGS 6/16/10MPCA 6/24/10MPCA 7/20/10USGS 8/18/10MPCA 8/24/10MPCA 9/22/10USGS 10/7/10MPCA 10/20/10USGS 11/9/10USGS 11/22/10
DO (mg/l)
Dept
h (m
)
5 10 15 20 25 300
5
10
15
20
25
30
35
40
45
50
USGS 5/20/10
MPCA 5/25/10
USGS 6/16/10
MPCA 6/24/10
MPCA 7/20/10
MPCA 8/9/10
MPCA 8/24/10
MPCA 9/22/10
USGS 10/7/10Temp (deg C)
Dept
h (m
)
0 2 4 6 8 10 12 14 160
5
10
15
20
25
30
35
40
45
50
USGS 5/20/10MPCA 5/25/10USGS 6/16/10MPCA 6/24/10MPCA 7/20/10MPCA 8/9/10MPCA 8/24/10MPCA 9/22/10USGS 10/7/10DO (mg/l)
Dept
h (m
)
Elk Lake Temperature & Oxygen
0 5 10 15 20 25 300
5
10
15
20
25
30
35
USGS 5/26/10MPCA 5/27/10MPCA 6/7/10USGS 6/15/10MPCA 6/29/10USGS 7/13/10MPCA 7/22/10MPCA 7/26/10MPCA 8/2/10MPCA 8/6/10USGS 8/17/10MPCA 8/26/10MPCA 9/13/10MPCA 9/28/10MPCA 10/12/10USGS 11/18/10Temp (deg C)
Dept
h (m
)
0 2 4 6 8 10 120
5
10
15
20
25
30
35
USGS 5/26/10MPCA 5/27/10MPCA 6/7/10USGS 6/15/10MPCA 6/29/10USGS 7/13/10MPCA 7/22/10MPCA 7/26/10MPCA 8/2/10MPCA 8/6/10USGS 8/17/10MPCA 8/26/10MPCA 9/13/10MPCA 9/28/10MPCA 10/12/10USGS 11/18/10DO (mg/l)
Dept
h (m
)
Trout Lake Temperature & Oxygen
6 8 10 12 14 16 18 20 22 24 260
5
10
15
20
25
MPCA 4/28/10MPCA 5/24/10MPCA 6/1/10USGS 6/9/10MPCA 6/21/10MPCA 7/1/10USGS 7/9/10MPCA 7/19/10MPCA 7/26/10USGS 8/12/10MPCA 7/30/10MPCA 8/23/10MPCA 8/30/10MPCA 9/20/10MPCA 9/30/10MPCA 10/11/10USGS 10/21/10MPCA 10/29/10Temp (deg C)
Dept
h (m
)
0 2 4 6 8 10 120
5
10
15
20
25
MPCA 4/28/10MPCA 5/24/10MPCA 6/1/10USGS 6/9/10MPCA 6/21/10MPCA 7/1/10USGS 7/9/10MPCA 7/19/10MPCA 7/26/10MPCA 7/30/10USGS 8/12/10MPCA 8/23/10MPCA 8/30/10MPCA 9/20/10MPCA 9/30/10MPCA 10/11/10USGS 10/21/10MPCA 10/29/10DO (mg/l)
Dept
h (m
)
5/2/
10
6/21
/10
8/10
/10
9/29
/10
11/1
8/10
0
5
10
15
20
25
30
Lake Carlos North Phosphorus
Surface TP
Depth TP
ug/l
5/2/
10
6/21
/10
8/10
/10
9/29
/10
11/1
8/10
0
5
10
15
20
25
30
Lake Carlos South Phosphorus
ug/l
5/2/
10
6/21
/10
8/10
/10
9/29
/10
11/1
8/10
0
5
10
15
20
25
30
Elk Lake Phosphorus
ug/l
5/2/
10
6/21
/10
8/10
/10
9/29
/10
11/1
8/10
0
5
10
15
20
25
30
Trout Lake Phosphorus
ug/l
5/2/
10
6/21
/10
8/10
/10
9/29
/10
11/1
8/10
0
50
100
150
200
250
300
Elk Lake Phosphorus
ug/l
5/2/
10
6/21
/10
8/10
/10
9/29
/10
11/1
8/10
-1.66533453693773E-16
0.2
0.4
0.6
0.8
1
1.2
Trout Lake Particulate Carbon
mg/
l
5/2/
10
6/21
/10
8/10
/10
9/29
/10
11/1
8/10
-1.66533453693773E-16
0.2
0.4
0.6
0.8
1
1.2
Elk Lake Particulate Carbon
mg/
l
5/2/
10
6/21
/10
8/10
/10
9/29
/10
11/1
8/10
-1.66533453693773E-16
0.2
0.4
0.6
0.8
1
1.2
Lake Carlos South Particulate Carbon
mg/
l5/
2/10
6/21
/10
8/10
/10
9/29
/10
11/1
8/10
0
0.2
0.4
0.6
0.8
1
1.2
Lake Carlos North Particulate Carbon
Surface Particulate Carbon
Depth Particulate Carbon
mg/
l
5/2/
10
6/21
/10
8/10
/10
9/29
/10
11/1
8/10
0
5
10
15
20
25
30 0
2
4
6
8
10
12
14
16
18
20
Trout Lake
ug/l
Dept
h (m
)
5/2/
10
6/21
/10
8/10
/10
9/29
/10
11/1
8/10
0
2
4
6
8
10
12
14
16
18
200
5
10
15
20
25
30
Elk Lake
Dept
h (m
)
ug/l
5/2/
10
6/21
/10
8/10
/10
9/29
/10
11/1
8/10
0
5
10
15
20
25
30 0
2
4
6
8
10
12
14
16
18
20
Lake Carlos South
ug/l
Dept
h (m
)
5/2/
10
6/21
/10
8/10
/10
9/29
/10
11/1
8/10
0
2
4
6
8
10
12
14
16
18
200
5
10
15
20
25
30
Lake Carlos North
Secchi
TP
Chl-a
Dept
h (m
)
ug/l
Stage/discharge Data Analysis
• Stage/discharge rating curves
• Quality Assurance
• Mean Flow Values
Stage Data: Inflow (Le Homme Dieu) vs outflow (Long Prairie)
Challenges
• Changing control conditions:
• Hard to assess weed growth in lakes
• Large rock pile placed in front of weir at outflow to Carlos
• Rating curves:
• Few measurements to define ratings
• Low gradients: lakes affected by boat traffic and wind
• Small stage range = large error in rated discharges
• Model output:
• Variability of inflow ratings complicate mean daily discharge
estimates for load calculations
Stage (ft)
Dis
char
ge
(cfs
)
Le Homme Dieu Inflow Stage vs Discharge
Lake Carlos Daily Mean Discharges
Future Work
• Continued flow measurements
• Another season of stage data
• Continued WQ sampling
• RTK-GPS to obtain true elevations at inflows/outflows
Sentinel Lakes Planning Matrix
USGS Objectives – Table 3. Proposed data collection activities
2009 2010 2011 2012
Tasks August October Ice-free Ice-free Sep. Dec. April June
Monitor Deployment
x x x x
Water-level gages x x x
Data Collection x x x x
W2 model calibration
x x x
W2 model validation
x x
NWIS data publication
x
Final report x
USGS Current Action Items
• Begin building model– Calibrate with water level & temperature data first
• Determine data collect needs for 2011 field season– Finish analyzing USGS & MPCA chemistry data. Look
for patterns, anomalies, and gaps.– Focus on high intensity, short collection periods vs.
once monthly sampling?– Increased sampling of phytoplankton, zooplankton to
fill biology gaps?– Profiler vs. sondes at fixed depths vs. Ecomapper
USGS Current Action Items
• Begin building model– Calibrate with water level & temperature data first
• Determine data collect needs for 2011 field season– Finish analyzing USGS & MPCA chemistry data. Look
for patterns, anomalies, and gaps.– Focus on high intensity, short collection periods vs.
once monthly sampling?– Increased sampling of phytoplankton, zooplankton to
fill biology gaps?– Profiler vs. sondes at fixed depths vs. Ecomapper
EcoMapper AUV• Autonomous Underwater Vehicle (AUV)• Capable of diving to 200 ft depth at up to 6.75 ft/s• Over 10 hours of run time • 1 Hz sampling rate
Turbidity Sensor
Blue-Green Algae Sensor
Temperature/Conductivity Sensor
Chlorophyll Sensor
ROX® Dissolved Oxygen Sensor
pH/ORP Sensor Not Shown:
Rhodamine WT Fluorescence
Water quality sensors(inside flow-through cap)
Side Scan Sonar
GPS/Wireless Antennae
Depth Sounder, DVL/ADCP*
Pressure Sensors, Compass, uplooking beam*
Propulsion
60.1 in.
11 in.
YSI EcoMapper
*New in 2010
Survey Modes
The vehicle can be programmed to travel at a specified depth from surface, height above bottom, or undulate
Depth from surface:monitored with YSI pressure transducer
Height from bottom:monitored with AUV depth sounder
Undulation
Constant Depth
Constant Altitude
Bathymetry
Rasmussen Lake July 14, 2009
Provisional Data Subject to Revision
Chlorophyll (mg/L) pH Blue Green Algae
(cells/mL) Temperature
(Deg. C)
Milwaukee HarborSeptember 9, 2010
Milwaukee Harbor
Outer HarborInner Harbor Lake Michigan
Contact Information
Richard Kiesling or Emily RessegerUS Geological Survey2280 Woodale Drive
Mounds View, MN 55112
Richard (763) 783-3131 officeEmily (763) 783-3128 office