Lodi Citizen's Monitoring - Lodi, California
April 2009
Weather: Clear/sunny temperature 18.5 C (65.3 F) Last rain within  48 hours
date Water had some olive-brown color, and algae reported.
10-Apr-09 River level down, dam lowered, Lodi Lake "drained"
Dissolved (TDS) Nitrate,
0 Water Oxygen Turbidity Conduct. as mg/L
Test Site Date Time  pH Temperature mg/L NTU uS Nitrogen Remarks
Site #1 10-Apr-09 11:50 8.0 12.9 C 55.2 F 9.7 1.5 ntu 40 0
River before City A A A A A A
Storm System inlets
Site # 2 10-Apr-09 12:20 7.4 13.7 C 56.7 F 9.3 4.1 ntu 40 0
River A A A A A A
near Casa de Lodi
Site # 5 10-Apr-09 15:25 6.3 14.8 C 58.6 F 11.3 13.1 ntu 40 na
River at C A A B A
1050 N Lincoln
Site # 7 10-Apr-09 15:40 7.5 13.8 C 56.8 F 9.6 2.5 ntu 40 0 water is calm, few ripples
River, near Gazebo A A A A A A
N/O Lodi Lake
Site # 7A 10-Apr-09 15:00 7.5 17.3 C 63.1 F 9.6 1.7 ntu 40 0 water is calm, few ripples
East end (S/o SD) A A A A A A
Lodi Lake
Site # 8
Lodi Lake
near Storm Drain
Site # 9A 10-Apr-09 15:00 6.3 14.4 C 57.9 F 9.3 5.9 ntu 40 na
River below WID C A A B A
Dam at Bridge
Weather: Clear, Light Breeze, temperature 21.3 C (70.4 F) Last rain: 4-11-09
date Water had some green and olive-brown color.
24-Apr-09 River level up, dam in place, Lodi Lake filled- 3/17/09
Dissolved (TDS) Nitrate,
Water Oxygen Turbidity Conduct. as mg/L
Test Site Date Time  pH Temperature mg/L NTU uS Nitrogen Remarks
Site #1 24-Apr-09 15:49 7.2 16.5 C 61.88 F 12.0 2.4 ntu 30 0
River before City A A A A A A
Storm System inlets
Site # 2 24-Apr-09 16:31 6.8 15.4 C 59.7 F 10.1 2.4 ntu 30 0
River B A A A A A
near Casa de Lodi
Site # 5 24-Apr-09 15:05 7.7 16.7 C 62.1 F 10.8 2.7 ntu 50 na
River at A A A A A
1050 N Lincoln
Site # 7
River, near Gazebo
N/O Lodi Lake
Site # 7A 24-Apr-09 15:41 7.5 18.8 C 68.9 F 7.9 2.2 ntu 40 0 geese poop on ground,ground slightly mushy
East end (S/o SD) A B A A A A
Lodi Lake
Site # 8 24-Apr-09 16:14 7.6 19.6 C 67.28 F 7.8 2.8 ntu 50 0
Lodi Lake A A A A A A
near Storm Drain
Site # 9A 24-Apr-09 14:38 7.1 19.3 C 66.7 F 9.4 4.0 ntu 50 na
River below WID A A A A A
Dam at Bridge
NA = Not Analyzed
GRADE: pH Temp D.O. Turbidity TDS Nitrates
A 7.0 - 8.0 Weather > 85% Saturation < 5 < 150 < 1
B 6.5-6.9, 8.1-8.5 and 75-84% Sat. 5 - 20 151 - 300 2  -  3
C 6.0-6.4, 8.6-9.0 condition 65-74% Sat. 21 - 50 301 - 500 4  -  5
D 5.5-5.9, 9.1-9.5 dependent 55-64% Sat. 50 - 150 501 -1000 6  -  10 
F <5.5, >9.5 < 55%Sat.,<5.0mg/L > 150 > 1000 > 10