Overview Realtime Historical Map View
Air Quality Alert
None

The Pennsylvania Department of Environmental Protection has issued a Code RED Air Quality Alert on Thursday for the Susquehanna Valley. A Code RED Air Quality Alert means that air pollution concentrations within the region are unhealthful for the general population. The effects of air pollution can be minimized by avoiding strenuous activity or exercise outdoors. For more information on ground-level ozone and fine particles, visit www.airnow.gov, and www.aqpartners.state.pa.us.

Conestoga River At Lancaster, Pa Historical Data

Historical Data


Streamflow Range


Date Average 2026 2025 2024 2023 2022 2021 2020 2019 2018 2017 2016 2015 2014 2013 2012 2011
01-01 639.17
01-02 641.42
01-03 559.73
01-04 590.58
01-05 546.92
01-06 501.75
01-07 619.08
01-08 500.45
01-09 467.58
01-10 828.5
01-11 634.25
01-12 878.17
01-13 749.33
01-14 652.42
01-15 568.75
01-16 515.58
01-17 579.69
01-18 502.25
01-19 452.92
01-20 481.31
01-21 559.73
01-22 439.75
01-23 423.73
01-24 540.6
01-25 707.31
01-26 869.2
01-27 633.82
01-28 602.42
01-29 620.92
01-30 484.75
01-31 479.25
02-01 722.56
02-02 519.93
02-03 494.28
02-04 1036.58
02-05 735.09
02-06 667.38
02-07 559.21
02-08 700.54
02-09 548.66
02-10 467.52
02-11 466.21
02-12 649.86
02-13 541.62
02-14 569.31
02-15 497.08
02-16 533.75
02-17 1103.42
02-18 545.54
02-19 501.31
02-20 496.07
02-21 576.93
02-22 566.5
02-23 534.14
02-24 541.0
02-25 858.46
02-26 683.08
02-27 586.29
02-28 635.07
02-29 645.0
03-01 910.07
03-02 719.14
03-03 706.57
03-04 625.86
03-05 610.36
03-06 654.36
03-07 560.64
03-08 540.21
03-09 487.07
03-10 791.86
03-11 808.93
03-12 999.71
03-13 999.93
03-14 723.07
03-15 899.93
03-16 718.14
03-17 614.57
03-18 591.43
03-19 591.53
03-20 588.0
03-21 524.4
03-22 849.86
03-23 586.8
03-24 673.73
03-25 695.4
03-26 564.47
03-27 510.67
03-28 560.73
03-29 786.53
03-30 563.47
03-31 731.36
04-01 801.8
04-02 661.27
04-03 756.6
04-04 893.6
04-05 661.4
04-06 567.07
04-07 778.87
04-08 874.4
04-09 589.07
04-10 540.14
04-11 487.86
04-12 525.0
04-13 572.92
04-14 728.93
04-15 488.46
04-16 564.0
04-17 601.08
04-18 476.08
04-19 465.23
04-20 478.85
04-21 496.43
04-22 465.29
04-23 423.64
04-24 441.79
04-25 407.29
04-26 484.5
04-27 518.29
04-28 410.64
04-29 381.86
04-30 400.07
05-01 1098.27
05-02 779.79
05-03 592.5
05-04 556.4
05-05 530.73
05-06 559.2
05-07 683.13
05-08 624.07
05-09 510.07
05-10 572.93
05-11 457.8
05-12 449.47
05-13 493.27
05-14 671.67
05-15 471.64
05-16 512.86
05-17 925.36
05-18 643.6
05-19 512.47
05-20 729.57
05-21 604.73
05-22 488.4
05-23 512.93
05-24 467.4
05-25 440.67
05-26 399.4
05-27 384.4
05-28 368.6
05-29 427.0
05-30 441.93
05-31 405.07
06-01 411.4
06-02 445.93
06-03 539.27
06-04 473.2
06-05 393.53
06-06 386.64
06-07 351.86
06-08 363.2
06-09 406.1
06-10 353.19
06-11 500.66
06-12 570.73
06-13 467.79
06-14 543.79
06-15 379.2
06-16 341.67
06-17 355.27
06-18 326.6
06-19 438.83
06-20 369.36
06-21 490.9
06-22 359.91
06-23 315.99
06-24 337.36
06-25 358.64
06-26 302.07
06-27 321.81
06-28 401.43
06-29 426.88
06-30 316.7
07-01 472.06
07-02 880.61
07-03 443.76
07-04 359.76
07-05 354.87
07-06 421.33
07-07 331.07
07-08 342.64
07-09 456.36
07-10 473.2
07-11 341.67
07-12 570.8
07-13 351.31
07-14 371.87
07-15 353.8
07-16 450.36
07-17 338.71
07-18 365.57
07-19 312.79
07-20 268.29
07-21 249.5
07-22 260.79
07-23 318.21
07-24 520.0
07-25 457.43
07-26 348.14
07-27 333.29
07-28 475.14
07-29 463.77
07-30 330.15
07-31 295.15
08-01 296.71
08-02 327.34
08-03 385.62
08-04 426.61
08-05 1059.55
08-06 363.84
08-07 303.49
08-08 476.38
08-09 341.46
08-10 292.23
08-11 287.57
08-12 288.64
08-13 262.43
08-14 645.14
08-15 351.23
08-16 326.42
08-17 279.91
08-18 251.02
08-19 561.96
08-20 380.13
08-21 270.95
08-22 432.15
08-23 429.01
08-24 443.59
08-25 301.36
08-26 259.92
08-27 237.04
08-28 241.96
08-29 850.29
08-30 341.51
08-31 264.84
09-01 630.48
09-02 1257.82
09-03 490.54
09-04 361.11
09-05 338.42
09-06 352.06
09-07 703.59
09-08 290.47
09-09 302.23
09-10 508.42
09-11 563.46
09-12 472.08
09-13 446.77
09-14 340.46
09-15 284.38
09-16 382.79
09-17 307.8
09-18 321.07
09-19 351.43
09-20 316.79
09-21 260.51
09-22 248.82
09-23 247.1
09-24 531.57
09-25 419.49
09-26 423.36
09-27 336.71
09-28 295.43
09-29 317.86
09-30 337.51
10-01 326.84
10-02 254.46
10-03 471.38
10-04 327.85
10-05 384.5
10-06 287.2
10-07 256.01
10-08 281.5
10-09 263.15
10-10 274.21
10-11 308.93
10-12 800.36
10-13 454.07
10-14 337.49
10-15 379.69
10-16 445.43
10-17 484.07
10-18 302.21
10-19 256.29
10-20 401.21
10-21 305.64
10-22 268.21
10-23 244.29
10-24 245.57
10-25 230.25
10-26 228.99
10-27 247.94
10-28 412.73
10-29 259.04
10-30 798.04
10-31 716.48
11-01 552.91
11-02 448.8
11-03 447.39
11-04 373.04
11-05 274.56
11-06 332.02
11-07 440.56
11-08 296.95
11-09 278.41
11-10 380.75
11-11 268.68
11-12 287.52
11-13 348.06
11-14 371.65
11-15 294.41
11-16 278.01
11-17 396.56
11-18 382.95
11-19 325.51
11-20 316.65
11-21 274.49
11-22 279.85
11-23 386.79
11-24 549.46
11-25 657.46
11-26 388.43
11-27 478.07
11-28 459.21
11-29 349.64
11-30 356.93
12-01 524.79
12-02 380.36
12-03 384.86
12-04 381.5
12-05 329.64
12-06 345.23
12-07 360.57
12-08 540.57
12-09 489.15
12-10 419.64
12-11 593.86
12-12 443.14
12-13 383.29
12-14 354.85
12-15 411.23
12-16 482.77
12-17 490.05
12-18 564.46
12-19 725.23
12-20 485.62
12-21 457.0
12-22 635.85
12-23 575.23
12-24 792.0
12-25 861.15
12-26 665.54
12-27 601.18
12-28 641.08
12-29 785.0
12-30 751.08
12-31 677.83

Annual Peak Streamflow


Seasonal Comparison


Oceanic Nino Index