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USGS Daily Statistics for the Nation

The statistics generated from this site are based on approved daily-mean data and may not match those published by the USGS in official publications. The user is responsible for assessment and use of statistics from this site. For more details on why the statistics may not match, click here.

USGS 03047000 Loyalhanna Creek at Loyalhanna Dam, PA


Westmoreland County, Pennsylvania
Hydrologic Unit Code 05010008
Latitude  40°27'32", Longitude  79°26'58" NAD83
Drainage area 290  square miles
Gage datum 889.38 feet above NGVD29
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00060, Discharge, cubic feet per second,
Day of
month		 Mean of daily mean values for each day for water year of record in, ft3/s   (Calculation Period 1939-10-01 -> 2021-09-30)

Calculation period restricted by USGS staff due to special conditions at/near site
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
1 640 685 897 840 625 539 392 202 177 180 268 521
2 668 674 923 880 605 517 367 199 166 181 278 510
3 714 690 1,010 938 596 465 330 203 160 199 271 467
4 744 739 941 968 596 497 321 200 172 212 282 454
5 796 814 852 983 617 578 298 236 180 234 285 442
6 863 878 872 1,000 610 447 279 239 184 242 281 480
7 793 841 1,040 987 649 383 283 237 178 245 288 515
8 703 862 1,140 976 613 346 257 225 176 235 281 515
9 638 842 1,190 980 643 358 225 212 183 202 256 548
10 537 762 1,210 981 691 352 230 213 189 183 260 571
11 484 728 1,180 947 678 339 252 203 216 178 278 595
12 496 742 1,140 926 678 384 279 186 213 184 282 601
13 513 762 1,140 853 713 346 292 187 205 193 294 596
14 530 767 1,070 803 728 338 301 193 208 197 282 617
15 556 727 1,020 734 737 402 295 189 227 203 272 598
16 586 752 1,030 705 742 433 266 199 227 199 270 565
17 632 854 1,030 809 723 445 242 184 207 192 272 552
18 632 907 962 912 706 462 229 178 239 234 305 533
19 562 881 929 928 690 456 216 176 250 231 350 544
20 555 872 919 949 693 428 195 174 238 219 369 573
21 577 860 856 827 628 383 179 153 233 250 360 570
22 562 867 904 707 599 370 181 143 221 244 359 536
23 538 869 964 626 585 381 212 143 204 222 341 567
24 585 860 967 630 533 400 237 151 188 223 345 641
25 637 856 943 664 510 414 233 155 172 218 364 694
26 618 834 971 687 491 393 212 151 185 186 406 725
27 629 863 943 690 496 362 186 150 203 178 414 711
28 674 914 920 693 464 380 166 148 221 203 400 705
29 679 822 870 728 506 396 161 186 202 223 424 689
30 702   854 681 549 392 166 202 187 227 480 645
31 689   899   572   195 195   235   650