Niobrara River (Nebraska), Sparks (06461500)

StateNebraskaLatestHigh (1240 cfs)
RiverNiobrara RiverRatingObservedEstimated
Updated2026-10-23 20:45 (1 hour ago)Flood - The river is flooding. Obstacles can be treacherous or deadly. The river should be avoided at this stage for casual trips and definitely for the inexperienced. Trips should be attempted only with protective gear and equipment.Flood(none)1327
Discharge1240 cfs (median: 666 cfs)High - The river is high and potentially dangerous, especially for the young and / or inexperienced. Normal stream obstacles are sometimes difficult to navigate. Extended distances can be attempted, but canoe travel may not be advisable.High(none)896
Height3.15 feetGood - Conditions are ideal for a canoe or kayak. Boats typically will drag on fewer than one-quarter of riffles, if at all, and portages are unnecessary or rare. Normal float lengths can be attempted without a problem.Good(none)792
TrendRising (rising over 24 hours)Low - River is low but can still be floated. Some riffles are okay but most come with significant dragging and might need a portage. Float lengths should be reduced to accommodate low flow, dragging, and portages.Low(none)612
USGSExternal icon USGS Site (External icon Duck Duck Go Maps)Poor - River is too low to float comfortably. Most or all riffles will drag or must be portaged and some obstacles (such as slick shelf rock) cause undue problems. Avoid the river at this stage for casual paddling trips.Poor(none)431

Trending Data

Plot Image

Trips for Niobrara River (Nebraska), Sparks (06461500)

DateStartEndDistanceConditionDischargeHeightFishingDetails

A total of 0 rows are displayed.

Condition Descriptions

Fishing Conditions

Fish Species

Notes

Classic Trip List

The classic River Trips application is still available for use. It is updated with the new system using a data retrofit. It is no longer maintained. The original River Trips application is no longer updated (as of 1 Dec 2016) but can be checked for errors or for the condition of the data before it was converted to the new system.

Gauge Data Table

ObservationHeightDischargeMaximum
Discharge		Minimum
Discharge		Mean
Discharge		P05P10P20P25P50
(Median)		P75P80P90P95
2026-10-23 20:45 3.15 1240 1090 (2020) 429 (1975) 702 524 549 573 583 666 800 828 865 972
2026-10-23 16:00 2.66 668 1090 (2020) 429 (1975) 702 524 549 573 583 666 800 828 865 972
2026-10-23 15:45 2.66 668 1090 (2020) 429 (1975) 702 524 549 573 583 666 800 828 865 972
2026-10-23 14:45 2.66 668 1090 (2020) 429 (1975) 702 524 549 573 583 666 800 828 865 972
2026-10-23 13:45 2.66 668 1090 (2020) 429 (1975) 702 524 549 573 583 666 800 828 865 972
2026-10-23 12:45 2.65 657 1090 (2020) 429 (1975) 702 524 549 573 583 666 800 828 865 972
2026-10-23 11:45 2.67 678 1090 (2020) 429 (1975) 702 524 549 573 583 666 800 828 865 972
2026-10-23 10:45 2.66 668 1090 (2020) 429 (1975) 702 524 549 573 583 666 800 828 865 972
2026-10-23 09:45 2.67 678 1090 (2020) 429 (1975) 702 524 549 573 583 666 800 828 865 972
2026-10-23 08:45 2.66 668 1090 (2020) 429 (1975) 702 524 549 573 583 666 800 828 865 972
2026-10-23 07:45 2.67 678 1090 (2020) 429 (1975) 702 524 549 573 583 666 800 828 865 972
2026-10-23 06:45 2.64 647 1090 (2020) 429 (1975) 702 524 549 573 583 666 800 828 865 972
2026-10-23 05:45 2.66 668 1090 (2020) 429 (1975) 702 524 549 573 583 666 800 828 865 972
2026-10-23 04:45 2.64 647 1090 (2020) 429 (1975) 702 524 549 573 583 666 800 828 865 972
2026-10-23 03:45 2.65 657 1090 (2020) 429 (1975) 702 524 549 573 583 666 800 828 865 972
2026-10-23 02:45 2.65 657 1090 (2020) 429 (1975) 702 524 549 573 583 666 800 828 865 972
2026-10-23 01:45 2.66 668 1090 (2020) 429 (1975) 702 524 549 573 583 666 800 828 865 972
2026-10-23 00:45 2.66 668 1090 (2020) 429 (1975) 702 524 549 573 583 666 800 828 865 972
2026-10-22 23:45 2.65 657 1090 (2020) 429 (1975) 702 524 549 573 583 666 800 828 865 972
2026-10-22 22:45 2.64 647 1070 (2020) 424 (1975) 698 522 536 564 578 666 798 825 907 1030
2026-10-22 21:45 2.64 647 1070 (2020) 424 (1975) 698 522 536 564 578 666 798 825 907 1030
2026-10-22 20:45 2.66 668 1070 (2020) 424 (1975) 698 522 536 564 578 666 798 825 907 1030
2026-10-22 17:45 2.67 678 1070 (2020) 424 (1975) 698 522 536 564 578 666 798 825 907 1030
2026-10-22 16:45 2.68 688 1070 (2020) 424 (1975) 698 522 536 564 578 666 798 825 907 1030
2026-10-22 15:45 2.70 709 1070 (2020) 424 (1975) 698 522 536 564 578 666 798 825 907 1030
2026-10-22 14:45 2.65 657 1070 (2020) 424 (1975) 698 522 536 564 578 666 798 825 907 1030
2026-10-22 13:45 2.66 668 1070 (2020) 424 (1975) 698 522 536 564 578 666 798 825 907 1030
2026-10-22 12:45 2.67 678 1070 (2020) 424 (1975) 698 522 536 564 578 666 798 825 907 1030
2026-10-22 11:45 2.66 668 1070 (2020) 424 (1975) 698 522 536 564 578 666 798 825 907 1030
2026-10-22 10:45 2.66 668 1070 (2020) 424 (1975) 698 522 536 564 578 666 798 825 907 1030
2026-10-22 09:45 2.66 668 1070 (2020) 424 (1975) 698 522 536 564 578 666 798 825 907 1030
2026-10-22 08:45 2.65 657 1070 (2020) 424 (1975) 698 522 536 564 578 666 798 825 907 1030
2026-10-22 07:45 2.66 668 1070 (2020) 424 (1975) 698 522 536 564 578 666 798 825 907 1030
2026-10-22 06:45 2.62 627 1070 (2020) 424 (1975) 698 522 536 564 578 666 798 825 907 1030
2026-10-22 05:45 2.64 647 1070 (2020) 424 (1975) 698 522 536 564 578 666 798 825 907 1030
2026-10-22 04:45 2.65 657 1070 (2020) 424 (1975) 698 522 536 564 578 666 798 825 907 1030
2026-10-22 03:45 2.65 657 1070 (2020) 424 (1975) 698 522 536 564 578 666 798 825 907 1030
2026-10-22 02:45 2.65 657 1070 (2020) 424 (1975) 698 522 536 564 578 666 798 825 907 1030
2026-10-22 01:45 2.64 647 1070 (2020) 424 (1975) 698 522 536 564 578 666 798 825 907 1030
2026-10-22 00:45 2.64 647 1070 (2020) 424 (1975) 698 522 536 564 578 666 798 825 907 1030
2026-10-21 23:45 2.63 637 1070 (2020) 424 (1975) 698 522 536 564 578 666 798 825 907 1030
2026-10-21 22:45 2.64 647 1110 (2020) 451 (1975) 698 520 541 571 578 654 793 815 919 999
2026-10-21 17:15 2.72 730 1110 (2020) 451 (1975) 698 520 541 571 578 654 793 815 919 999
2026-10-21 16:45 2.71 719 1110 (2020) 451 (1975) 698 520 541 571 578 654 793 815 919 999
2026-10-21 15:45 2.66 668 1110 (2020) 451 (1975) 698 520 541 571 578 654 793 815 919 999
2026-10-21 14:45 2.66 668 1110 (2020) 451 (1975) 698 520 541 571 578 654 793 815 919 999
2026-10-21 13:45 2.64 647 1110 (2020) 451 (1975) 698 520 541 571 578 654 793 815 919 999
2026-10-21 12:45 2.64 647 1110 (2020) 451 (1975) 698 520 541 571 578 654 793 815 919 999
2026-10-21 11:00 2.73 741 1110 (2020) 451 (1975) 698 520 541 571 578 654 793 815 919 999
2026-10-21 10:45 2.64 647 1110 (2020) 451 (1975) 698 520 541 571 578 654 793 815 919 999
2026-10-21 09:45 2.69 699 1110 (2020) 451 (1975) 698 520 541 571 578 654 793 815 919 999
2026-10-21 08:45 2.67 678 1110 (2020) 451 (1975) 698 520 541 571 578 654 793 815 919 999
2026-10-21 07:45 2.67 678 1110 (2020) 451 (1975) 698 520 541 571 578 654 793 815 919 999
2026-10-21 06:45 2.65 657 1110 (2020) 451 (1975) 698 520 541 571 578 654 793 815 919 999
2026-10-21 05:45 2.65 657 1110 (2020) 451 (1975) 698 520 541 571 578 654 793 815 919 999
2026-10-21 04:45 2.64 647 1110 (2020) 451 (1975) 698 520 541 571 578 654 793 815 919 999
2026-10-21 03:45 2.65 657 1110 (2020) 451 (1975) 698 520 541 571 578 654 793 815 919 999
2026-10-21 02:45 2.64 647 1110 (2020) 451 (1975) 698 520 541 571 578 654 793 815 919 999
2026-10-21 01:45 2.63 637 1110 (2020) 451 (1975) 698 520 541 571 578 654 793 815 919 999
2026-10-21 00:45 2.65 657 1110 (2020) 451 (1975) 698 520 541 571 578 654 793 815 919 999
2026-10-20 23:45 2.65 657 1110 (2020) 451 (1975) 698 520 541 571 578 654 793 815 919 999
2026-10-20 22:45 2.64 647 1160 (2024) 429 (1975) 685 517 531 560 570 640 793 809 847 991
2026-10-20 21:45 2.66 668 1160 (2024) 429 (1975) 685 517 531 560 570 640 793 809 847 991
2026-10-20 20:45 2.67 678 1160 (2024) 429 (1975) 685 517 531 560 570 640 793 809 847 991
2026-10-20 19:45 2.70 709 1160 (2024) 429 (1975) 685 517 531 560 570 640 793 809 847 991
2026-10-20 18:45 2.65 657 1160 (2024) 429 (1975) 685 517 531 560 570 640 793 809 847 991
2026-10-20 17:45 2.63 637 1160 (2024) 429 (1975) 685 517 531 560 570 640 793 809 847 991
2026-10-20 16:45 2.70 709 1160 (2024) 429 (1975) 685 517 531 560 570 640 793 809 847 991
2026-10-20 14:45 2.66 668 1160 (2024) 429 (1975) 685 517 531 560 570 640 793 809 847 991
2026-10-20 13:45 2.64 647 1160 (2024) 429 (1975) 685 517 531 560 570 640 793 809 847 991
2026-10-20 12:45 2.67 678 1160 (2024) 429 (1975) 685 517 531 560 570 640 793 809 847 991
2026-10-20 11:45 2.65 657 1160 (2024) 429 (1975) 685 517 531 560 570 640 793 809 847 991
2026-10-20 10:45 2.65 657 1160 (2024) 429 (1975) 685 517 531 560 570 640 793 809 847 991
2026-10-20 09:45 2.64 647 1160 (2024) 429 (1975) 685 517 531 560 570 640 793 809 847 991
2026-10-20 08:45 2.64 647 1160 (2024) 429 (1975) 685 517 531 560 570 640 793 809 847 991
2026-10-20 07:45 2.66 668 1160 (2024) 429 (1975) 685 517 531 560 570 640 793 809 847 991
2026-10-20 06:45 2.65 657 1160 (2024) 429 (1975) 685 517 531 560 570 640 793 809 847 991
2026-10-20 05:45 2.67 678 1160 (2024) 429 (1975) 685 517 531 560 570 640 793 809 847 991
2026-10-20 04:45 2.67 678 1160 (2024) 429 (1975) 685 517 531 560 570 640 793 809 847 991
2026-10-20 03:45 2.66 668 1160 (2024) 429 (1975) 685 517 531 560 570 640 793 809 847 991
2026-10-20 02:45 2.65 657 1160 (2024) 429 (1975) 685 517 531 560 570 640 793 809 847 991
2026-10-20 01:45 2.64 647 1160 (2024) 429 (1975) 685 517 531 560 570 640 793 809 847 991
2026-10-20 00:45 2.64 647 1160 (2024) 429 (1975) 685 517 531 560 570 640 793 809 847 991
2026-10-19 23:45 2.64 647 1160 (2024) 429 (1975) 685 517 531 560 570 640 793 809 847 991
2026-10-19 22:45 2.65 657 1270 (2024) 444 (1975) 678 516 534 556 568 639 776 793 838 980
2026-10-19 21:45 2.66 668 1270 (2024) 444 (1975) 678 516 534 556 568 639 776 793 838 980
2026-10-19 20:45 2.65 657 1270 (2024) 444 (1975) 678 516 534 556 568 639 776 793 838 980
2026-10-19 19:45 2.64 647 1270 (2024) 444 (1975) 678 516 534 556 568 639 776 793 838 980
2026-10-19 18:45 2.65 657 1270 (2024) 444 (1975) 678 516 534 556 568 639 776 793 838 980
2026-10-19 17:45 2.65 657 1270 (2024) 444 (1975) 678 516 534 556 568 639 776 793 838 980
2026-10-19 16:45 2.65 657 1270 (2024) 444 (1975) 678 516 534 556 568 639 776 793 838 980
2026-10-19 15:45 2.65 657 1270 (2024) 444 (1975) 678 516 534 556 568 639 776 793 838 980
2026-10-19 14:45 2.64 647 1270 (2024) 444 (1975) 678 516 534 556 568 639 776 793 838 980
2026-10-19 13:45 2.65 657 1270 (2024) 444 (1975) 678 516 534 556 568 639 776 793 838 980
2026-10-19 12:45 2.65 657 1270 (2024) 444 (1975) 678 516 534 556 568 639 776 793 838 980
2026-10-19 11:45 2.66 668 1270 (2024) 444 (1975) 678 516 534 556 568 639 776 793 838 980
2026-10-19 10:45 2.66 668 1270 (2024) 444 (1975) 678 516 534 556 568 639 776 793 838 980
2026-10-19 09:45 2.66 668 1270 (2024) 444 (1975) 678 516 534 556 568 639 776 793 838 980
2026-10-19 08:45 2.65 657 1270 (2024) 444 (1975) 678 516 534 556 568 639 776 793 838 980
2026-10-19 07:45 2.68 688 1270 (2024) 444 (1975) 678 516 534 556 568 639 776 793 838 980
2026-10-19 06:45 2.65 657 1270 (2024) 444 (1975) 678 516 534 556 568 639 776 793 838 980
2026-10-19 05:45 2.66 668 1270 (2024) 444 (1975) 678 516 534 556 568 639 776 793 838 980
2026-10-19 04:45 2.66 668 1270 (2024) 444 (1975) 678 516 534 556 568 639 776 793 838 980
2026-10-19 03:45 2.67 678 1270 (2024) 444 (1975) 678 516 534 556 568 639 776 793 838 980
2026-10-19 02:45 2.66 668 1270 (2024) 444 (1975) 678 516 534 556 568 639 776 793 838 980
2026-10-19 01:45 2.66 668 1270 (2024) 444 (1975) 678 516 534 556 568 639 776 793 838 980
2026-10-19 00:45 2.66 668 1270 (2024) 444 (1975) 678 516 534 556 568 639 776 793 838 980
2026-10-18 23:45 2.66 668 1270 (2024) 444 (1975) 678 516 534 556 568 639 776 793 838 980
2026-10-18 22:45 2.67 678 1370 (2024) 472 (1975) 675 510 528 552 563 635 760 789 827 982
2026-10-18 21:45 2.66 668 1370 (2024) 472 (1975) 675 510 528 552 563 635 760 789 827 982
2026-10-18 20:45 2.66 668 1370 (2024) 472 (1975) 675 510 528 552 563 635 760 789 827 982
2026-10-18 19:45 2.66 668 1370 (2024) 472 (1975) 675 510 528 552 563 635 760 789 827 982
2026-10-18 18:45 2.66 668 1370 (2024) 472 (1975) 675 510 528 552 563 635 760 789 827 982
2026-10-18 17:45 2.64 647 1370 (2024) 472 (1975) 675 510 528 552 563 635 760 789 827 982
2026-10-18 16:45 2.65 657 1370 (2024) 472 (1975) 675 510 528 552 563 635 760 789 827 982
2026-10-18 15:45 2.64 647 1370 (2024) 472 (1975) 675 510 528 552 563 635 760 789 827 982
2026-10-18 14:45 2.64 647 1370 (2024) 472 (1975) 675 510 528 552 563 635 760 789 827 982
2026-10-18 13:45 2.66 668 1370 (2024) 472 (1975) 675 510 528 552 563 635 760 789 827 982
2026-10-18 12:45 2.67 678 1370 (2024) 472 (1975) 675 510 528 552 563 635 760 789 827 982
2026-10-18 11:45 2.64 647 1370 (2024) 472 (1975) 675 510 528 552 563 635 760 789 827 982
2026-10-18 10:45 2.64 647 1370 (2024) 472 (1975) 675 510 528 552 563 635 760 789 827 982
2026-10-18 09:45 2.66 668 1370 (2024) 472 (1975) 675 510 528 552 563 635 760 789 827 982
2026-10-18 08:45 2.65 657 1370 (2024) 472 (1975) 675 510 528 552 563 635 760 789 827 982
2026-10-18 07:45 2.67 678 1370 (2024) 472 (1975) 675 510 528 552 563 635 760 789 827 982
2026-10-18 06:45 2.66 668 1370 (2024) 472 (1975) 675 510 528 552 563 635 760 789 827 982
2026-10-18 05:45 2.66 668 1370 (2024) 472 (1975) 675 510 528 552 563 635 760 789 827 982
2026-10-18 04:45 2.68 688 1370 (2024) 472 (1975) 675 510 528 552 563 635 760 789 827 982
2026-10-18 03:45 2.67 678 1370 (2024) 472 (1975) 675 510 528 552 563 635 760 789 827 982
2026-10-18 02:45 2.68 688 1370 (2024) 472 (1975) 675 510 528 552 563 635 760 789 827 982
2026-10-18 01:45 2.67 678 1370 (2024) 472 (1975) 675 510 528 552 563 635 760 789 827 982
2026-10-18 00:45 2.67 678 1370 (2024) 472 (1975) 675 510 528 552 563 635 760 789 827 982
2026-10-17 23:45 2.68 688 1370 (2024) 472 (1975) 675 510 528 552 563 635 760 789 827 982
2026-10-17 22:45 2.66 668 1440 (2024) 455 (1975) 670 489 523 544 556 650 766 782 816 976
2026-10-17 21:45 2.67 678 1440 (2024) 455 (1975) 670 489 523 544 556 650 766 782 816 976
2026-10-17 20:45 2.65 657 1440 (2024) 455 (1975) 670 489 523 544 556 650 766 782 816 976
2026-10-17 19:45 2.66 668 1440 (2024) 455 (1975) 670 489 523 544 556 650 766 782 816 976
2026-10-17 18:45 2.68 688 1440 (2024) 455 (1975) 670 489 523 544 556 650 766 782 816 976
2026-10-17 17:45 2.67 678 1440 (2024) 455 (1975) 670 489 523 544 556 650 766 782 816 976
2026-10-17 16:45 2.66 668 1440 (2024) 455 (1975) 670 489 523 544 556 650 766 782 816 976
2026-10-17 15:45 2.66 668 1440 (2024) 455 (1975) 670 489 523 544 556 650 766 782 816 976
2026-10-17 14:45 2.67 678 1440 (2024) 455 (1975) 670 489 523 544 556 650 766 782 816 976
2026-10-17 13:45 2.66 668 1440 (2024) 455 (1975) 670 489 523 544 556 650 766 782 816 976
2026-10-17 12:45 2.65 657 1440 (2024) 455 (1975) 670 489 523 544 556 650 766 782 816 976
2026-10-17 11:45 2.68 688 1440 (2024) 455 (1975) 670 489 523 544 556 650 766 782 816 976
2026-10-17 10:45 2.66 668 1440 (2024) 455 (1975) 670 489 523 544 556 650 766 782 816 976
2026-10-17 09:45 2.67 678 1440 (2024) 455 (1975) 670 489 523 544 556 650 766 782 816 976
2026-10-17 08:45 2.69 699 1440 (2024) 455 (1975) 670 489 523 544 556 650 766 782 816 976
2026-10-17 07:45 2.67 678 1440 (2024) 455 (1975) 670 489 523 544 556 650 766 782 816 976
2026-10-17 06:45 2.68 688 1440 (2024) 455 (1975) 670 489 523 544 556 650 766 782 816 976
2026-10-17 05:45 2.67 678 1440 (2024) 455 (1975) 670 489 523 544 556 650 766 782 816 976
2026-10-17 04:45 2.67 678 1440 (2024) 455 (1975) 670 489 523 544 556 650 766 782 816 976
2026-10-17 03:45 2.67 678 1440 (2024) 455 (1975) 670 489 523 544 556 650 766 782 816 976
2026-10-17 02:45 2.67 678 1440 (2024) 455 (1975) 670 489 523 544 556 650 766 782 816 976
2026-10-17 01:45 2.66 668 1440 (2024) 455 (1975) 670 489 523 544 556 650 766 782 816 976
2026-10-17 00:45 2.68 688 1440 (2024) 455 (1975) 670 489 523 544 556 650 766 782 816 976
2026-10-16 23:45 2.66 668 1440 (2024) 455 (1975) 670 489 523 544 556 650 766 782 816 976
2026-10-16 22:45 2.68 688 1520 (2024) 453 (1975) 671 493 524 552 558 628 777 784 828 977
2026-10-16 21:45 2.68 688 1520 (2024) 453 (1975) 671 493 524 552 558 628 777 784 828 977
2026-10-16 20:45 2.67 678 1520 (2024) 453 (1975) 671 493 524 552 558 628 777 784 828 977
2026-10-16 19:45 2.67 678 1520 (2024) 453 (1975) 671 493 524 552 558 628 777 784 828 977
2026-10-16 18:45 2.67 678 1520 (2024) 453 (1975) 671 493 524 552 558 628 777 784 828 977
2026-10-16 17:45 2.67 678 1520 (2024) 453 (1975) 671 493 524 552 558 628 777 784 828 977
2026-10-16 16:45 2.66 668 1520 (2024) 453 (1975) 671 493 524 552 558 628 777 784 828 977
2026-10-16 15:45 2.66 668 1520 (2024) 453 (1975) 671 493 524 552 558 628 777 784 828 977
2026-10-16 14:45 2.66 668 1520 (2024) 453 (1975) 671 493 524 552 558 628 777 784 828 977
2026-10-16 13:45 2.63 637 1520 (2024) 453 (1975) 671 493 524 552 558 628 777 784 828 977
2026-10-16 12:45 2.64 647 1520 (2024) 453 (1975) 671 493 524 552 558 628 777 784 828 977
2026-10-16 11:45 2.63 637 1520 (2024) 453 (1975) 671 493 524 552 558 628 777 784 828 977
2026-10-16 10:45 2.64 647 1520 (2024) 453 (1975) 671 493 524 552 558 628 777 784 828 977
2026-10-16 09:45 2.63 637 1520 (2024) 453 (1975) 671 493 524 552 558 628 777 784 828 977
2026-10-16 08:45 2.64 647 1520 (2024) 453 (1975) 671 493 524 552 558 628 777 784 828 977
2026-10-16 07:45 2.65 657 1520 (2024) 453 (1975) 671 493 524 552 558 628 777 784 828 977
2026-10-16 06:45 2.65 657 1520 (2024) 453 (1975) 671 493 524 552 558 628 777 784 828 977
2026-10-16 05:45 2.62 627 1520 (2024) 453 (1975) 671 493 524 552 558 628 777 784 828 977
2026-10-16 04:45 2.64 647 1520 (2024) 453 (1975) 671 493 524 552 558 628 777 784 828 977
2026-10-16 03:45 2.63 637 1520 (2024) 453 (1975) 671 493 524 552 558 628 777 784 828 977
2026-10-16 02:45 2.62 627 1520 (2024) 453 (1975) 671 493 524 552 558 628 777 784 828 977
2026-10-16 01:45 2.61 617 1520 (2024) 453 (1975) 671 493 524 552 558 628 777 784 828 977
2026-10-16 00:45 2.60 607 1520 (2024) 453 (1975) 671 493 524 552 558 628 777 784 828 977
2026-10-15 23:45 2.62 627 1520 (2024) 453 (1975) 671 493 524 552 558 628 777 784 828 977

A total of 180 rows are displayed for years 1946 through 2025.