Water Quality in the Caddo Lake Watershed Caddo Lake Water Quality Cypress Creek Clean Rivers...
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![Page 1: Water Quality in the Caddo Lake Watershed Caddo Lake Water Quality Cypress Creek Clean Rivers Program.](https://reader033.fdocuments.us/reader033/viewer/2022061304/5513b9e55503465b298b464c/html5/thumbnails/1.jpg)
Water Quality in the Caddo Lake Watershed
Caddo Lake Water Quality
Cypress Creek Clean Rivers Program
![Page 2: Water Quality in the Caddo Lake Watershed Caddo Lake Water Quality Cypress Creek Clean Rivers Program.](https://reader033.fdocuments.us/reader033/viewer/2022061304/5513b9e55503465b298b464c/html5/thumbnails/2.jpg)
![Page 3: Water Quality in the Caddo Lake Watershed Caddo Lake Water Quality Cypress Creek Clean Rivers Program.](https://reader033.fdocuments.us/reader033/viewer/2022061304/5513b9e55503465b298b464c/html5/thumbnails/3.jpg)
Monitoring Station Types
• Routine monitoring is used to follow trends and to identify water quality changes in the major watersheds.
• Systematic monitoring is a screening tool used to detect potential concerns. Typically placed on the smaller streams. Biological monitoring is a key factor.
• Special study monitoring projects are located and designed to address a specific concern.
![Page 4: Water Quality in the Caddo Lake Watershed Caddo Lake Water Quality Cypress Creek Clean Rivers Program.](https://reader033.fdocuments.us/reader033/viewer/2022061304/5513b9e55503465b298b464c/html5/thumbnails/4.jpg)
![Page 5: Water Quality in the Caddo Lake Watershed Caddo Lake Water Quality Cypress Creek Clean Rivers Program.](https://reader033.fdocuments.us/reader033/viewer/2022061304/5513b9e55503465b298b464c/html5/thumbnails/5.jpg)
Water Quality Parameter Sets
• Field– Temperature– Dissolved Oxygen– Conductivity– pH– Secchi Depth
Diel Sampling
• Conventional– Suspended Solids– Dissolved Solids
• Chloride• Sulfate• Hardness• Alkalinity
– Nutrients –Ammonia, Nitrate & Organic Nitrogen, Phosphorus
– Chlorophyll– Bacteria
![Page 6: Water Quality in the Caddo Lake Watershed Caddo Lake Water Quality Cypress Creek Clean Rivers Program.](https://reader033.fdocuments.us/reader033/viewer/2022061304/5513b9e55503465b298b464c/html5/thumbnails/6.jpg)
Other Sample Sets
• Metals in Water and in Sediment– aluminum, arsenic, chromium, copper, nickel,
silver, zinc, barium, molybdenum, selenium, iron, and manganese
• Habitat & Biological– Fish & Macroinvertebrates (Benthics)
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Average Annual Inflow to Caddo Lake
During 1979 – 2004
Average Annual Inflow to Caddo Lake
During 1979 – 2004
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Total Phosphorus Measurements in Segment 0402 Cypress Creek Basin 1973-2006
0
5
10
15
20
25
30
35
40
45
Y ear
16936
16935
16934
16705
16254
16253
15511
15135
15022
14997
14474
14471
13630
10295
10294
10248
10247
10246
10245
10244
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Black Cypress BayouStation 10245
pH Dissolved Oxygen (mg/l)
• Average 6.4 Average 7.0• Median 6.4 Median 6.6• Range 5.3-8.6 (71) Range 2.3-11.8 (72)
Chlorophyll a g/l)
Average 7.65 Median 5.00
Range 0.20-58.00 (65)
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Black Cypress Bayou Station 10245 DO Saturation Deficits
R2 = 0.0229
-1.0
0.0
1.0
2.0
3.0
4.0
5.0
6.0
7.0
1/1/74
6/24/79
12/14/84
6/6/90
11/27/95
5/19/01
mg
/l
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DO 24HR Min
DO 24HR Max DO Range
DO 24HR Average
Station 10245
07/18/2000 3.3 3.7 0.4 3.5
08/24/2000 0.4 2.2 1.8 1.1
11/21/2000 10.2 10.5 0.3 10.3
04/06/2001 7.1 6.2 -0.9 6.7
05/04/2001 6.3 5.9 -0.4 6
06/08/2001 5.4 5.5 0.1 5
07/03/2001 5.6 5.8 0.2 5.7
08/08/2001 2.1 3.4 1.3 3.1
09/11/2001 5.7 5.8 0.1 5.7
10/19/2001 7.7 7.9 0.2 7.8
04/13/2005 6.5 6.7 0.2 6.6
05/06/2005 7.4 7.8 0.4 7.6
Average 0.3 5.8
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Nitrogen (mg/l) Station 10245
Nitrate + Nitrite Nitrate
Average 0.11 0.13
Median 0.10 0.08
Range 0.04-0.28 (26) 0.02-0.79 (38)
Ammonia TKN
Average 0.08 0.58
Median 0.05 0.54
Range 0.0-0.277 (65) 0.03-1.27 (34)
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Total Phosphorus (mg/l)
Station 10245 10246
Average 0.08 0.10
Median 0.08 0.08
Range 0.01-0.26 (66) 0.03-0.20 (25)
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Black Cypress Bayou, Station 10245 Total Phosphorus Concentrations
R2 = 2E-08
0
0.05
0.1
0.15
0.2
0.25
0.3
1/1/74 5/24/81 10/14/88 3/6/96 7/28/03
mg/
l
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Black Cypress Bayou: Average Seasonal Flows
40%
10%9%
41% Spring
Summer
Fall
Winter
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Black Cypress Bayou: Seasonal Phosphorus Concentrations (mg/l)
0.09
0.11
0.08
0.06
Spring
Summer
Fall
Winter
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Black Cypress Bayou: Seasonal Phosphorus Loads (kg)
11619
37622301
8045Spring
Summer
Fall
Winter
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Black Cypress Bayou: Average Seasonal Nitrogen Concentrations (mg/l)
0.81
0.660.72
0.59
Spring
Summer
Fall
Winter
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Black Cypress Bayou: Seasonal Nitrogen Loads (kg)
105140
2184020867
78518Spring
Summer
Fall
Winter
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Little Cypress Bayou Station 10332
pH Dissolved Oxygen (mg/l)
Average 6.6 7.0
Median 6.6 6.9
Range 5.2-8.6 (157) 2.3-13.7 (154)
Chlorophyll a g/l)
Average 6.66 Median 5.00
Range 0.20-58.00 (65)
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Station 10332, Little Cypress Bayou, Saturation Deficits
R2 = 0.0022
-4.0
-2.0
0.0
2.0
4.0
6.0
8.0
10.0
DO
mg/
l
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DO 24HR MinDO 24HR
Max DO RangeDO 24HR Average
Station 10332
4/2/02 6.8 7.3 0.5 7
5/3/02 4.4 4.7 0.3 4.5
6/4/02 5 5.4 0.4 5.2
7/2/02 4.4 4.8 0.4 4.6
8/1/02 3.9 4.5 0.6 4.2
9/4/02 4.8 5.4 0.6 5
6/3/03 4.3 4.5 0.2 4.4
6/24/03 4.9 5.2 0.3 5
7/25/03 2.8 3.5 0.7 3.1
8/13/03 4.6 5.7 1.1 5
Average 0.5 4.8
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Nitrogen (mg/l) Station 10332
Nitrate + Nitrite Nitrate
Average 0.14 0.09
Median 0.10 0.07
Range 0.05-0.40 (68) 0.02-0.26 (22)
Ammonia TKN
Average 0.08 0.76
Median 0.05 0.70
Range 0.01-0.90 (122) 0.20-2.90 (109)
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Total Phosphorus (mg/l)
Station 10332 15773
Average 0.11 0.21
Median 0.09 0.14
Range 0.01-1.10 (122) 0.01-1.34 (20)
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Little Cypress Bayou: Average Seasonal Flows
42%
10%7%
41% Spring
Summer
Fall
Winter
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Little Cypress Bayou: Average Seasonal Total
Phosphorus Concentrations (mg/m3)
0.10
0.15
0.09
0.07
Spring
Summer
Fall
Winter
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Little Cypress Bayou: Seasonal Phosphorus Load (kg)
20422
74083337
14773Spring
Summer
Fall
Winter
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Little Cypress Bayou: Average Seasonal Total Nitrogen Concentrations (mg/l)
1.07
0.890.70
0.99Spring
Summer
Fall
Winter
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Little Cypress Bayou: Seasonal Total Nitrogen Loads
45%
9%5%
41% Spring
Summer
Fall
Winter
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Big Cypress Creek Average Seasonal Flows
40%
14%8%
38% Spring
Summer
Fall
Winter
![Page 37: Water Quality in the Caddo Lake Watershed Caddo Lake Water Quality Cypress Creek Clean Rivers Program.](https://reader033.fdocuments.us/reader033/viewer/2022061304/5513b9e55503465b298b464c/html5/thumbnails/37.jpg)
Big Cypress Creek Average Seasonal Flows 1924-1959
47%
12%7%
34% Spring
Summer
Fall
Winter
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Big Cypress Creek Average Seasonal Phosphorus Concentrations mg/l)
0.088
0.089
0.054
0.065Spring
Summer
Fall
Winter
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Big Cypress Creek Average Seasonal Phosphorus Load (kg)
19872
69642351
13638 Spring
Summer
Fall
Winter
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BigBlack
Little0
50000
100000
150000
200000
Average Seasonal Flows (acre-feet)
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Spring Summer FallWinter
BigBlack
Little0
5000
10000
15000
20000
25000
Average Seasonal Phosphorus Loads (kg)
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Seasonal Turnover (Total Inflow/Caddo Volume, 130,000 acre feet)
3.480
1.0040.674
3.380 Spring
Summer
Fall
Winter
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Seasonal Turnover: Big Cypress Flow/Caddo Lake Volume
0.000
0.500
1.000
1.500
2.000
Spring Summer Fall Winter
1925-59
1979-05