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Air Quality Alert
None

The Pennsylvania Department of Environmental Protection has issued a Code PURPLE Air Quality Alert for all of Central Pennsylvania for today, Friday July 17th. Wildfire smoke from northern Minnesota and south central Canada will continue to result in very unhealthy air quality. Everyone should limit outdoor strenuous activity and exercise due to poor air quality. Sensitive groups should avoid all outdoor activity. Sensitive groups include children, the elderly, and people suffering from heart disease, asthma, or other lung diseases. For more information on ground-level ozone and fine particles, visit www.airnow.gov, and www.aqpartners.state.pa.us.

Swatara Creek At Harper Tavern, 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
01-01 883.75
01-02 861.1
01-03 766.4
01-04 863.0
01-05 754.56
01-06 680.6
01-07 594.9
01-08 542.64
01-09 505.7
01-10 1089.6
01-11 1204.73
01-12 1151.4
01-13 1010.3
01-14 967.6
01-15 818.4
01-16 705.11
01-17 749.64
01-18 590.3
01-19 569.45
01-20 583.09
01-21 791.33
01-22 583.25
01-23 586.86
01-24 1678.38
01-25 1459.33
01-26 1429.13
01-27 1269.57
01-28 1203.75
01-29 1077.22
01-30 852.33
01-31 823.11
02-01 1082.67
02-02 782.33
02-03 775.88
02-04 1145.88
02-05 1474.63
02-06 734.3
02-07 654.27
02-08 864.09
02-09 675.58
02-10 582.0
02-11 534.08
02-12 881.27
02-13 843.75
02-14 764.33
02-15 659.33
02-16 728.56
02-17 1691.78
02-18 926.1
02-19 765.2
02-20 738.18
02-21 713.7
02-22 726.0
02-23 783.7
02-24 789.2
02-25 1245.6
02-26 1045.2
02-27 921.27
02-28 882.75
02-29 1116.0
03-01 1081.17
03-02 1060.92
03-03 900.82
03-04 948.0
03-05 893.17
03-06 1207.08
03-07 943.08
03-08 844.91
03-09 712.45
03-10 988.25
03-11 834.92
03-12 943.08
03-13 1351.07
03-14 908.5
03-15 932.86
03-16 776.43
03-17 806.71
03-18 767.93
03-19 747.33
03-20 742.21
03-21 663.33
03-22 1053.36
03-23 821.07
03-24 867.27
03-25 738.47
03-26 654.2
03-27 619.73
03-28 591.33
03-29 890.53
03-30 673.07
03-31 898.0
04-01 982.33
04-02 835.07
04-03 887.93
04-04 1164.67
04-05 915.93
04-06 718.13
04-07 1122.6
04-08 1218.07
04-09 835.2
04-10 709.53
04-11 604.33
04-12 696.64
04-13 730.36
04-14 1084.93
04-15 975.46
04-16 1145.92
04-17 989.92
04-18 723.08
04-19 663.92
04-20 675.08
04-21 659.79
04-22 634.36
04-23 547.36
04-24 507.14
04-25 456.93
04-26 636.5
04-27 573.43
04-28 490.36
04-29 451.29
04-30 451.5
05-01 1461.67
05-02 1028.86
05-03 730.14
05-04 657.47
05-05 704.73
05-06 836.8
05-07 847.13
05-08 1005.53
05-09 923.07
05-10 906.33
05-11 671.2
05-12 604.27
05-13 704.93
05-14 925.4
05-15 715.93
05-16 1062.43
05-17 1150.71
05-18 866.67
05-19 729.6
05-20 1228.79
05-21 919.87
05-22 703.33
05-23 721.27
05-24 678.2
05-25 569.07
05-26 479.13
05-27 466.53
05-28 447.8
05-29 471.0
05-30 775.33
05-31 752.58
06-01 811.13
06-02 628.27
06-03 637.2
06-04 501.93
06-05 609.09
06-06 578.64
06-07 448.79
06-08 376.64
06-09 404.35
06-10 384.27
06-11 695.39
06-12 1256.43
06-13 787.43
06-14 643.14
06-15 483.2
06-16 385.67
06-17 365.07
06-18 354.25
06-19 408.89
06-20 781.71
06-21 597.64
06-22 627.0
06-23 458.46
06-24 441.21
06-25 455.42
06-26 318.79
06-27 377.14
06-28 610.53
06-29 1125.46
06-30 427.97
07-01 526.79
07-02 1004.79
07-03 544.89
07-04 408.34
07-05 478.51
07-06 371.0
07-07 321.74
07-08 527.5
07-09 520.94
07-10 547.09
07-11 336.47
07-12 292.9
07-13 265.47
07-14 294.35
07-15 582.45
07-16 594.57
07-17 326.53
07-18 554.71
07-19 370.43
07-20 279.71
07-21 245.5
07-22 254.36
07-23 453.71
07-24 1496.07
07-25 1714.0
07-26 1525.43
07-27 793.74
07-28 526.21
07-29 451.29
07-30 376.43
07-31 314.93
08-01 354.54
08-02 424.71
08-03 442.86
08-04 450.46
08-05 724.5
08-06 431.26
08-07 366.74
08-08 537.77
08-09 383.46
08-10 300.35
08-11 249.96
08-12 618.79
08-13 701.36
08-14 1304.16
08-15 619.81
08-16 477.05
08-17 392.65
08-18 356.32
08-19 570.47
08-20 410.55
08-21 306.65
08-22 420.37
08-23 371.29
08-24 363.08
08-25 269.81
08-26 231.9
08-27 204.75
08-28 264.56
08-29 729.79
08-30 310.24
08-31 235.79
09-01 656.57
09-02 1286.67
09-03 1072.32
09-04 378.19
09-05 291.14
09-06 554.36
09-07 977.15
09-08 344.69
09-09 315.69
09-10 1131.74
09-11 831.56
09-12 563.04
09-13 432.59
09-14 368.16
09-15 302.53
09-16 279.19
09-17 243.78
09-18 243.6
09-19 425.97
09-20 307.28
09-21 227.05
09-22 211.53
09-23 223.72
09-24 777.12
09-25 462.51
09-26 484.54
09-27 332.77
09-28 522.59
09-29 613.12
09-30 510.92
10-01 435.45
10-02 305.42
10-03 327.1
10-04 319.55
10-05 481.69
10-06 337.86
10-07 272.94
10-08 310.1
10-09 299.03
10-10 418.14
10-11 337.88
10-12 820.07
10-13 415.54
10-14 353.83
10-15 412.77
10-16 372.07
10-17 404.79
10-18 308.43
10-19 259.1
10-20 333.69
10-21 287.19
10-22 246.95
10-23 239.93
10-24 233.83
10-25 265.21
10-26 218.74
10-27 203.82
10-28 429.57
10-29 433.0
10-30 828.86
10-31 1095.71
11-01 1379.79
11-02 969.71
11-03 770.07
11-04 563.36
11-05 355.31
11-06 586.38
11-07 635.46
11-08 446.77
11-09 366.46
11-10 472.62
11-11 367.23
11-12 390.54
11-13 543.69
11-14 539.5
11-15 386.79
11-16 372.79
11-17 467.43
11-18 470.54
11-19 425.38
11-20 401.92
11-21 390.15
11-22 419.67
11-23 592.43
11-24 883.92
11-25 886.62
11-26 572.36
11-27 703.36
11-28 669.43
11-29 502.36
11-30 539.57
12-01 608.31
12-02 547.08
12-03 553.23
12-04 513.0
12-05 436.85
12-06 451.62
12-07 585.5
12-08 743.29
12-09 626.64
12-10 596.69
12-11 579.23
12-12 595.54
12-13 500.77
12-14 460.17
12-15 546.27
12-16 617.64
12-17 839.5
12-18 800.09
12-19 1331.83
12-20 755.85
12-21 643.92
12-22 1210.38
12-23 930.38
12-24 1184.62
12-25 1556.92
12-26 1539.0
12-27 860.27
12-28 950.92
12-29 1072.18
12-30 1038.67
12-31 889.75

Annual Peak Streamflow


Seasonal Comparison


Oceanic Nino Index