Water Quality Data from the Intake Channel of the Tracy Fish Collection Facility, Byron, California
Summary of Percentiles by WEEK of YEAR (_ww)
Water Quality Multiprobe located in Intake Channel of the Tracy Fish Collection Facility, Tracy, California 3748'54" N 12133'30" W
Summaries Based on Period of Record April 1, 2000 through February 15, 2007 <> Measurements at 30-min limits <> 2,512 days, 120,552 observations
Bureau of Reclamation Validated Water Quality Data <> Contact: Doug Craft dcraft@do.usbr.gov 303-445-2182 <> TRACY FISH FACILITY IMPROVEMENT PROGRAM <> http://www.usbr.gov/pmts/tech_services/tracy_research/
Key to Variable Names: VARIABLE_PERCENTILE_SUMMARY - To export this data table to Microsoft Excel: 1. From this browser: File -> Save As -> "your file name.htm" 2. From Excel: Data -> Import External Data -> Import Data -> "your file name.htm"
Variables T_ Channel Water Temperature(T), measured in Degrees Celsius, C
EC_ Electrical Conductivity (EC), measured in microSiemens per centimeter, S/cm
DOpct_ Percent Dissolved Oxygen Saturation in Water (DOpct), measured in percent, %
DO_ Dissolved Oxygen (DO), measured in milligrams per liter, mg/L
pH_ Hydrogen Ion Activity in Water (pH), measured in standard units, s.u.
Eh_ Oxidation-Reduction Potential, Redox, (Eh), measured in millivolts, mV
Turbidity_ Turbidity, measured in Nephelometric Turbidity Units, NTU <> Turbidity values > 195 NTU are beyond probe calibration range, Lower Detection Limit ~ 1 NTU
Percentiles _05th_ 5th Percentile - approximates the lower 95% confidence limit
_16th_ 16th Percentile - approximates the lower 68% confidence limit
_Median_ 50th Percentile - approximates the mean or average
_84th_ 84th Percentile - approximates the upper 68% confidence limit
_95th_ 95th Percentile - approximates the upper 95% confidence limit
Variable Summary Suffixes _dyr Summary by Day of Year
_ww Summary by Week of Year
_mm Summary my Month of Year
_sd Summary by continuous STUDY DAY (since April 1, 2000)
_sw Summary by continuous STUDY WEEK (since April 1, 2000)
_sm Summary by continuous STUDY MONTH (since April 1, 2000)
Week_of_Year Begin_Date T_05th_ww T_16th_ww T_Median_ww T_84th_ww T_95th_ww EC_05th_ww EC_16th_ww EC_Median_ww EC_84th_ww EC_95th_ww DOpct_05th_ww DOpct_16th_ww DOpct_Median_ww DOpct_84th_ww DOpct_95th_ww DO_05th_ww DO_16th_ww DO_Median_ww DO_84th_ww DO_95th_ww pH_05th_ww pH_16th_ww pH_Median_ww pH_84th_ww pH_95th_ww Eh_05th_ww Eh_16th_ww Eh_Median_ww Eh_84th_ww Eh_95th_ww Turbidity_05th_ww Turbidity_16th_ww Turbidity_Median_ww Turbidity_84th_ww Turbidity_95th_ww
1 1-Jan 7.9 8.2 9.4 11.0 11.5 197 353 469 581 671 64.6 69.4 77.1 87.5 91.9 6.83 7.55 8.58 10.09 10.84 6.99 7.09 7.31 7.51 7.72 271 291 342 468 477 2.8 4.5 12.0 23.8 40.2
2 8-Jan 7.0 8.3 10.0 10.9 11.4 188 267 426 631 799 54.9 60.7 69.1 89.8 111.7 6.09 6.76 7.70 10.46 11.08 6.95 7.00 7.15 7.52 7.63 236 255 290 406 466 2.4 3.0 11.6 26.3 57.8
3 15-Jan 5.8 7.3 9.1 10.3 10.7 200 253 350 600 765 54.2 58.9 69.7 88.5 92.8 6.20 6.66 7.76 10.92 11.19 7.04 7.07 7.33 7.60 7.64 261 269 295 507 534 1.5 3.0 16.1 57.9 125.6
4 22-Jan 6.8 7.9 8.7 9.9 10.4 214 246 345 627 866 50.5 58.5 79.0 87.4 90.1 5.80 6.71 9.13 10.34 10.90 7.11 7.16 7.36 7.67 7.94 166 186 297 508 534 0.9 1.2 15.0 24.0 36.4
5 29-Jan 7.9 8.2 9.8 11.4 12.1 248 264 377 572 872 49.5 66.4 80.1 88.3 90.2 5.60 7.53 8.95 10.30 10.67 6.96 7.16 7.25 7.43 7.81 174 242 295 381 568 0.9 2.5 9.7 22.5 31.7
6 5-Feb 8.4 9.2 10.4 11.5 12.0 212 258 370 473 871 46.0 71.0 82.9 88.3 90.6 5.08 7.85 9.18 10.10 10.40 7.08 7.15 7.22 7.37 7.42 200 239 308 418 554 0.8 1.5 7.0 25.3 32.7
7 12-Feb 8.6 9.8 11.3 12.6 13.2 235 251 330 445 710 56.6 60.4 81.0 88.5 91.4 6.20 6.56 8.74 9.97 10.46 7.19 7.23 7.33 7.68 8.09 207 241 329 402 409 1.2 2.3 6.2 24.0 33.4
8 19-Feb 9.9 10.8 12.1 13.4 13.7 226 241 349 496 791 48.3 54.7 81.3 85.9 88.7 5.06 5.78 8.83 9.46 9.81 7.04 7.14 7.22 7.32 7.34 199 235 298 380 559 1.6 3.0 6.6 24.9 32.1
9 26-Feb 10.9 11.8 12.5 13.9 14.3 207 306 349 455 848 51.5 56.1 83.4 87.7 89.6 5.47 5.96 8.98 9.44 9.69 7.14 7.24 7.35 7.46 7.59 218 252 365 467 510 0.1 2.2 8.5 29.7 41.0
10 5-Mar 11.1 11.6 13.4 14.9 16.2 221 251 417 621 928 49.9 59.5 82.5 88.1 90.6 5.13 6.11 8.72 9.34 9.62 7.07 7.22 7.34 7.51 7.82 196 250 304 480 565 0.1 1.8 9.9 27.2 39.8
11 12-Mar 11.0 11.7 14.9 16.6 17.3 223 227 466 712 868 53.9 62.0 79.4 89.5 92.9 5.24 6.13 8.34 9.19 9.74 6.94 7.28 7.41 8.22 8.39 232 267 322 507 536 1.3 2.1 9.7 24.2 30.9
12 19-Mar 11.6 12.4 14.5 17.3 18.6 226 237 478 911 1092 65.2 72.0 80.3 96.8 101.1 6.62 7.30 7.98 9.88 10.75 6.98 7.19 7.43 7.93 8.03 240 274 343 486 541 1.6 2.0 7.0 27.3 39.2
13 26-Mar 12.5 13.2 15.8 17.7 18.5 225 250 299 747 931 63.1 70.5 80.9 99.3 106.3 6.39 7.14 8.11 9.77 10.24 7.11 7.19 7.38 7.90 8.10 192 270 334 517 550 1.7 4.0 11.8 31.3 47.4
14 1-Apr 13.0 13.9 15.8 17.4 18.1 210 214 276 463 766 61.5 69.2 80.5 98.7 105.4 6.23 7.10 8.11 9.49 10.03 7.01 7.11 7.48 8.08 8.43 150 194 331 502 553 3.2 5.8 11.3 33.5 46.4
15 8-Apr 14.2 14.5 16.8 18.5 19.1 192 210 282 433 681 38.3 50.7 82.7 96.6 101.4 3.76 4.97 8.09 9.26 9.75 6.89 7.20 7.50 8.09 8.48 158 207 332 478 515 4.8 5.9 12.0 32.5 43.5
16 15-Apr 14.9 15.4 16.5 17.4 18.1 195 234 288 430 633 29.6 49.6 76.7 90.0 94.2 2.98 4.88 7.53 8.74 9.13 7.15 7.19 7.56 7.80 8.08 245 256 321 416 503 2.9 6.1 12.5 26.3 33.1
17 22-Apr 15.5 15.9 17.3 18.7 20.2 150 273 334 433 516 48.4 65.8 78.6 88.0 92.9 4.67 6.36 7.47 8.43 8.82 7.14 7.23 7.55 7.76 7.86 244 255 338 394 435 2.4 6.2 13.4 28.3 34.0
18 29-Apr 16.6 17.3 18.7 20.2 21.6 139 144 345 412 474 52.4 59.4 74.2 85.0 89.0 4.88 5.44 6.89 8.00 8.49 7.00 7.07 7.54 7.72 7.79 228 257 308 421 533 3.1 3.7 20.8 36.5 45.6
19 6-May 16.2 17.1 18.3 21.1 22.4 137 260 348 428 473 51.7 56.4 69.7 77.8 82.6 4.79 5.23 6.49 7.34 7.79 6.93 7.22 7.42 7.60 7.74 206 254 318 506 549 3.9 5.8 19.7 35.0 43.6
20 13-May 17.4 18.1 19.5 20.9 22.2 128 238 346 381 426 50.0 54.3 66.4 75.2 82.0 4.54 4.98 6.09 7.09 7.69 6.90 7.13 7.48 7.66 7.80 247 296 354 496 531 3.6 5.6 16.3 28.1 37.9
21 20-May 17.5 18.1 20.2 23.3 24.2 124 159 354 476 537 51.8 62.1 74.8 87.0 93.2 4.67 5.59 6.66 7.86 8.35 7.10 7.17 7.36 7.56 7.83 208 265 383 519 562 3.6 5.7 13.0 24.1 33.2
22 27-May 18.1 19.0 21.6 23.4 24.1 128 145 363 560 664 60.2 68.2 79.5 88.5 97.0 5.38 6.07 7.06 7.86 8.49 7.15 7.21 7.33 7.58 7.90 227 274 372 456 542 4.1 5.9 18.9 41.7 71.5
23 3-Jun 18.7 19.9 21.8 22.8 23.6 138 145 246 422 525 49.8 62.3 78.8 90.0 100.8 4.31 5.39 6.93 7.89 8.85 6.93 7.05 7.28 7.72 7.95 260 276 367 403 423 2.9 4.5 26.3 44.3 59.5
24 10-Jun 19.4 20.2 21.6 22.9 24.4 135 144 255 362 487 44.7 60.3 80.6 93.1 97.6 4.02 5.46 6.96 8.19 8.61 6.88 7.17 7.37 7.69 7.79 252 269 381 450 538 3.8 5.6 26.1 51.2 109.6
25 17-Jun 19.5 21.1 22.5 24.7 25.6 148 159 285 347 485 50.1 66.8 81.3 94.4 100.1 4.41 5.72 6.84 8.35 8.97 6.79 7.23 7.50 7.78 7.85 253 274 405 468 560 4.8 7.3 25.9 52.2 88.0
26 24-Jun 21.0 22.1 23.5 24.7 25.2 132 142 260 342 406 67.1 70.6 80.1 90.8 101.4 5.67 6.00 6.76 7.74 8.94 6.88 6.96 7.47 7.78 7.88 237 286 410 478 565 7.0 8.2 23.9 36.6 46.7
27 1-Jul 21.9 22.9 24.1 25.7 26.2 163 173 237 287 336 62.0 70.5 83.1 91.8 102.2 5.28 5.99 6.89 7.70 8.88 6.83 6.91 7.42 7.62 7.70 247 335 459 513 546 7.9 11.6 22.2 39.8 58.1
28 8-Jul 22.6 23.5 24.6 25.7 26.2 153 174 226 309 351 63.7 72.2 82.1 92.0 96.1 5.25 5.97 6.79 7.73 8.05 6.88 7.04 7.43 7.67 7.89 306 320 454 508 556 6.9 10.2 18.0 32.5 43.3
29 15-Jul 22.5 22.9 25.1 26.4 27.0 146 196 247 322 414 55.1 68.7 81.7 88.9 93.3 4.41 5.60 6.75 7.56 7.96 6.85 7.06 7.45 7.89 8.13 238 333 476 527 551 4.8 7.7 16.8 27.3 37.6
30 22-Jul 23.3 23.8 24.9 26.9 28.4 188 204 269 368 423 52.4 63.5 80.3 90.5 95.2 4.19 5.06 6.71 7.55 7.91 6.82 7.19 7.56 7.79 7.92 264 324 462 517 561 5.6 7.5 18.3 31.7 42.1
31 29-Jul 23.0 23.5 24.4 25.8 26.3 217 231 290 403 448 51.1 63.6 84.0 93.4 96.9 4.19 5.29 7.02 7.84 8.14 7.16 7.35 7.52 8.09 8.22 241 312 409 529 568 3.6 6.8 16.7 36.7 47.4
32 5-Aug 23.0 23.5 24.3 25.2 25.8 199 236 290 399 444 56.6 67.3 79.7 89.8 94.3 4.69 5.66 6.64 7.50 7.91 7.21 7.37 7.66 8.10 8.19 216 242 427 492 570 5.4 8.8 18.1 43.8 60.7
33 12-Aug 23.1 23.5 24.2 24.8 25.1 235 254 298 464 520 51.6 57.7 83.7 91.4 95.3 4.33 4.86 7.02 7.63 7.93 7.11 7.27 7.63 8.08 8.17 258 280 431 486 559 3.2 5.0 13.0 26.5 54.5
34 19-Aug 22.5 22.9 23.6 24.2 24.7 249 268 340 491 528 62.4 76.6 85.4 91.2 94.1 5.32 6.46 7.25 7.82 8.13 7.14 7.31 7.66 7.95 8.15 245 298 421 536 565 3.9 6.8 13.9 23.0 32.6
35 26-Aug 22.0 23.1 23.7 24.3 24.6 276 287 342 482 513 59.8 72.7 89.0 95.3 102.2 5.08 6.14 7.58 8.06 8.73 6.98 7.14 7.61 8.00 8.25 255 287 396 511 557 2.3 6.1 14.2 33.7 53.0
36 2-Sep 20.7 21.5 22.9 23.8 24.3 258 278 360 519 569 51.7 63.1 87.0 95.1 119.3 4.49 5.41 7.43 8.18 10.64 7.07 7.20 7.67 7.95 8.06 156 209 355 505 566 3.8 6.4 13.1 36.2 50.7
37 9-Sep 20.9 21.4 22.1 22.9 23.2 279 292 364 490 592 64.8 76.4 89.2 119.3 133.0 5.56 6.67 7.74 10.48 11.61 7.19 7.34 7.70 7.93 8.13 163 207 309 379 554 2.9 4.6 11.6 39.4 49.4
38 16-Sep 20.1 20.8 22.1 22.9 23.4 276 294 367 536 565 64.4 75.1 87.4 98.7 106.8 5.68 6.67 7.60 8.63 9.36 7.09 7.16 7.60 7.93 8.04 213 230 291 436 548 2.1 3.1 10.1 27.6 38.9
39 23-Sep 18.9 20.2 21.1 22.5 23.1 269 281 384 572 615 68.1 75.7 88.4 95.3 101.0 6.27 6.93 7.76 8.51 9.05 7.08 7.12 7.48 7.91 7.98 222 228 370 444 464 1.4 2.3 10.8 27.8 52.3
40 30-Sep 18.7 19.3 20.8 21.6 22.0 316 344 477 528 544 64.1 73.8 86.8 96.9 104.8 5.72 6.65 7.76 8.64 9.44 7.20 7.40 7.55 7.66 7.74 170 235 298 393 456 1.2 2.9 10.6 20.9 46.2
41 7-Oct 18.5 18.9 19.7 20.5 20.9 324 343 485 535 562 76.3 78.5 83.6 93.0 97.3 6.94 7.13 7.64 8.50 8.91 7.02 7.43 7.57 7.70 7.76 188 238 297 410 514 1.7 3.5 11.5 21.6 35.6
42 14-Oct 16.8 17.7 18.7 19.4 19.7 258 263 436 502 579 71.4 76.7 83.3 89.5 94.4 6.61 7.18 7.79 8.36 8.81 7.25 7.37 7.51 7.62 7.74 215 230 264 333 508 1.5 2.2 8.0 29.3 69.5
43 21-Oct 15.5 16.3 17.4 18.7 19.4 263 351 462 565 625 66.6 73.5 83.8 88.9 93.0 6.24 6.83 8.02 8.60 9.14 7.27 7.41 7.55 7.74 7.83 205 272 332 462 544 0.8 1.8 12.8 43.3 196.0
44 28-Oct 14.4 14.9 15.9 17.4 17.9 266 283 423 508 579 62.3 69.3 83.5 88.8 90.9 5.99 6.75 8.11 8.70 8.98 7.30 7.37 7.46 7.65 7.82 161 231 318 358 377 0.9 2.1 14.9 196.0 196.0
45 4-Nov 13.8 14.3 15.0 16.2 16.7 249 309 400 495 520 64.4 71.4 79.0 88.0 90.7 6.56 7.20 7.98 8.72 9.60 7.31 7.34 7.46 7.58 7.84 234 258 336 468 548 1.0 2.0 10.0 83.3 196.0
46 11-Nov 11.8 13.6 14.4 15.1 15.9 321 404 476 557 682 67.9 72.6 80.9 88.7 94.9 6.97 7.49 8.31 9.45 9.93 7.30 7.39 7.53 7.62 7.69 261 289 358 436 511 0.1 4.0 11.3 44.0 196.0
47 18-Nov 10.9 11.5 13.6 14.4 15.4 360 431 496 602 744 70.4 75.7 81.9 87.0 93.0 7.29 7.95 8.60 9.50 9.89 7.34 7.42 7.52 7.65 7.73 232 287 307 436 463 3.2 5.9 10.9 26.8 54.9
48 25-Nov 9.8 10.3 11.2 12.4 13.0 374 442 533 695 833 57.5 60.9 85.4 90.1 94.9 6.36 8.58 9.39 9.92 10.20 7.16 7.40 7.57 7.71 7.84 204 219 280 464 522 1.0 5.2 9.8 19.0 29.8
49 2-Dec 9.3 9.8 10.4 11.4 11.9 402 428 513 679 753 75.0 82.0 87.7 92.4 93.9 8.68 9.24 9.76 10.31 10.54 7.18 7.33 7.55 7.83 7.88 241 286 369 459 565 0.9 1.2 8.5 25.7 42.9
50 9-Dec 9.5 9.8 10.5 11.2 11.5 402 415 519 626 769 62.4 72.6 84.9 90.6 92.8 7.01 8.28 9.56 10.34 10.63 7.24 7.28 7.36 7.69 7.89 219 239 304 442 492 0.6 1.0 5.9 21.2 89.0
51 16-Dec 8.7 9.1 10.0 10.9 11.6 395 438 555 643 739 72.3 76.0 81.9 89.1 93.6 8.20 8.65 9.35 10.36 10.95 7.28 7.34 7.47 7.60 7.65 258 311 360 454 480 1.4 2.4 7.9 31.3 87.7
52 23-Dec 8.0 8.5 9.3 10.6 12.3 299 413 504 603 751 69.4 73.7 77.9 85.5 91.2 7.65 8.16 8.89 9.92 10.74 7.21 7.25 7.48 7.72 8.09 240 260 312 471 484 1.1 2.7 10.1 29.6 89.8