watershed protection plan and instream water quality goals ......0409_02 and 0409_03 (middle little...
TRANSCRIPT
12/13/2011 1
Watershed Protection Plan
and
Instream Water Quality Goals
Tim Osting
RPS Espey
December 13, 2011
12/13/2011 2
Watershed Protection Plan
12/13/2011 3
Watershed Protection Plan
Evaluate segments impaired for Bacteria and DO
Assumptions
Models
Watershed: SELECT, SWAT, QUALTX
Lake: EFDC, WASP
Technical Reports issued Nov-10 and Jan-11
Volume 1: Watershed loading and watershed and lake modeling
Volume 2: BMPs to achieve load reductions
12/13/2011 4
12/13/2011 5
12/13/2011 6
Watershed Protection Plan
Status
Comments received through Nov 2011
Next steps
WQWG meeting
Prioritize comments on Technical Report
Stakeholder input
WPP document
12/13/2011 7
Watershed: Summary of Major
POTENTIAL Bacteria Sources
All impaired-area Sub-Watersheds
Cattle, Feral Hogs, Sheep/Goats
Poultry Litter
0409_04 (upper Little Cypress Creek)
0402A_04 (Black Cypress Bayou)
OSSF
0409_02 and 0409_03 (middle Little Cypress Creek)
CAFO
0409B (South Lilly Creek)
0409_04
12/13/2011 8
Watershed Protection Plan:
Caddo Lake
Circulation and Water Quality model
12/13/2011 9
Clinton
Lake Back
Lake
Trout
Pond
Taylor
Island
Turtle Shell
Goose Prairie
Incorporate
1. Periphyton in wetland cells to
represent rooted macrophytes.
2. Leaf fall in cypress cells
12/13/2011 10
Differentiation of river, lake and wetland areas
is key to modeling Caddo Lake
L24A
Some rooted vegetation, e.g. hydrilla.
Macrophyte stems
Rooted + floating vegetation,
e.g. G. Salvinia, Water Hyacinth
Cypress stems
Cypress Trees + Macrophytes
W106A W105A
“BLUE” “GREEN” “BROWN”
1. River channel
2. Open Lake 3. Wetland -
Macrophytes 4. Wetland -
Cypress
Different
hydrodynamic,
vegetation,
and
water quality
characteristics
12/13/2011 11
Water surface elevation (water budget)
12/13/2011 12
Temporal patterns in different areas of Caddo Lake DO (mg/L)
Riverine areas exhibit flow dependent character
DO (mg/L)
Wetland areas exhibit seasonal character
DO (mg/L)
Open lake areas exhibit a mix between flow-dependent and seasonal behavior
12/13/2011 13
12/13/2011 14
SB2 Instream Flows
Water Quality approach and modeling
evaluation
12/13/2011 15
Ongoing SB2 projects
Evaluation of a water quality approach for
instream flows
Model code screening and identification
Case study leading to integration: San
Antonio River
Temperature
DO
Brazos River, Little River, Navasota River
12/13/2011 16
WQ
Goals
Little Cypress Bayou (Creek)
0409 Little
Parameter Instream Flow Goals (Values)
DO* (EC 2011a)
<= 12 hours below 3 mg/L
<= 2 hours below 2 mg/L
>1.5 mg/L
Temperature* (EC 2010a) <= 35°C (95°F)
DO* (TCEQ 2010a)
>= 5.0 mg/L daily average or
>= DO mg/L = 12.11 -0.309*T +
1.05*logQ - 1.02*logWS and
>= 1.5 mg/L
= DO - 0.5 minimum for <= 8 hours
Temperature* (EC2011d) seasonal <= 27°C (80.6°F) Jan - May
Temperature* (TCEQ 2010a) <= 90°F (32.2°C)
TSS (90pctl) no value
Nitrate (TCEQ 2010b) <= 1.95 mg/L
Ammonia* (TCEQ 2010b) <= 0.33 mg/L
Orthophosphate* (TCEQ 2010b) <= 0.37 mg/L
E. Coli* (TCEQ 2010a) <= 126 org/100mL geometric mean
Chlorophyll-a (TCEQ 2010b) <= 14.1 ug/L
pH (TCEQ 2010a) 5.5-8.5
Total Nitrogen* no value
NOx* (TCEQ 2004) <= 2.76 mg/L
Organic Nitrogen* no value
Total Phosphorus* (TCEQ 2010b) <= 0.69 mg/L
Chloride (TCEQ 2010a) <= 100 mg/L
Sulfate (TCEQ 2010a) <= 50 mg/L
TDS (TCEQ 2010a) <= 300 mg/L
* = Preliminary indicator identified by SB2 TIFP stakeholders other basins
Tier 1 - Primary priority
Tier 2 - Secondary priority
Tier 3 - additional parameters
12/13/2011 17
WQ
Goals
Big Cypress Creek below Lake O' the Pines
0402 Big Cypress Creek below Lake O' the Pines
Parameter Instream Flow Goals (Values)
DO* (EC 2011a)
<= 12 hours below 3 mg/L
<= 2 hours below 2 mg/L
>1.5 mg/L
Temperature* (EC 2010a) <= 35°C (95°F)
DO* (TCEQ 2010a)
>= 5.0 mg/L daily average
= 3.0 mg/L minimum for <= 8 hours
For Spring Condition:
>= 5.5 mg/L daily average
= 4.5 mg/L minimum for <= 8 hours
Temperature* (EC2011d) seasonal <= 27°C (80.6°F) Jan - May
Temperature* (TCEQ 2010a) <= 93°F (33.9°C)
TSS (90pctl) no value
Nitrate (TCEQ 2010b) <= 1.95 mg/L
Ammonia* (TCEQ 2010b) <= 0.33 mg/L
Orthophosphate* (TCEQ 2010b) <= 0.37 mg/L
E. Coli* (TCEQ 2010a) <= 126 org/100mL geometric mean
Chlorophyll-a (TCEQ 2010b) <= 14.1 ug/L
pH (TCEQ 2010a) 5.5-8.0
Total Nitrogen* no value
NOx* (TCEQ 2004) <= 2.76 mg/L
Organic Nitrogen* no value
Total Phosphorus* (TCEQ 2010b) <= 0.69 mg/L
Chloride (TCEQ 2010a) <= 100 mg/L
Sulfate (TCEQ 2010a) <= 50 mg/L
TDS (TCEQ 2010a) <= 300 mg/L
* = Preliminary indicator identified by SB2 TIFP stakeholders other basins
Tier 1 - Primary priority
Tier 2 - Secondary priority
Tier 3 - additional parameters
12/13/2011 18
Little Cypress (02)
15
20
25
30
35
40
454
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0:0
0
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4/1
0 0
:00
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/10
0:0
0
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/10
0:0
0
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5/1
0 0
:00
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0 0
:00
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0 0
:00
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/10
0:0
0
6/1
2/1
0 0
:00
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0 0
:00
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0 0
:00
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/10
0:0
0
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0/1
0 0
:00
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0 0
:00
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0 0
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0 0
:00
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/10
0:0
0
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4/1
0 0
:00
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1/1
0 0
:00
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8/1
0 0
:00
9/4
/10
0:0
0
9/1
1/1
0 0
:00
9/1
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0 0
:00
9/2
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0 0
:00
10
/2/1
0 0
:00
Wa
ter
Te
mp
era
ture
(`C
)
0
0.5
1
1.5
2
2.5
3
De
pth
(ft
)
temp_C
dep