How high is the Yakima River Above Ahtanum Creek at Union Gap, WA right now?

The Yakima River Above Ahtanum Creek at Union Gap, WA is currently flowing at 3,250 cubic feet per second with a gage height of 41.47 feet, based on the most recent USGS instantaneous reading.

Is the flow on the Yakima River Above Ahtanum Creek at Union Gap, WA normal for this time of year?

Current flow is classified as low for June 11. Today's discharge is at the 20th percentile compared to the long-term historical record at this gauge.

What is the historical median flow for the Yakima River Above Ahtanum Creek at Union Gap, WA on June 11?

The long-term median discharge for this date is 5,350 cfs based on USGS daily statistics. The 10th–95th percentile range historically is 2,760 to 13,100 cfs.

Where is the Yakima River Above Ahtanum Creek at Union Gap, WA stream gauge located?

The Yakima River Above Ahtanum Creek at Union Gap, WA stream gauge is operated by the USGS in Yakima County, WA on the Yakima River. USGS site number 12500450 (coordinates 46.5343, -120.4673).

Yakima River Above Ahtanum Creek at Union Gap, WA

USGS Site No: 12500450 • Yakima River • Yakima County, WA

Yakima River Above Ahtanum Creek at Union Gap, WA on the Yakima River is currently at 3,250 cfs (Low — 20th percentile for this date) . Gage height: 41.47 ft.

Reading from 1 week ago

↑ Upstream on Yakima River

Yakima River at Umtanum, WA

Downstream on Yakima River ↓

Yakima River at Mabton, WA

3,250

CFS Discharge

41.47

Gage Height (ft)

Low

Flow Condition

N/A

Flood Status

Historical Percentile Comparison

Today's discharge compared to the long-term record for June 11 at this station. Percentile rank shows what fraction of historical years had lower flow on this date.

Percentile	Label	CFS Threshold	Today's Flow
10th	Very Low threshold	2,760
25th	Low threshold	3,480	Today: 3,250 cfs
50th (Median)	Normal (median)	5,350
75th	High threshold	7,400
95th	Very High threshold	13,100

30-Day Hydrograph

Recent discharge plotted against the historical 10th–95th percentile envelope for the same calendar days. Source: USGS daily values + long-term statistics.

10th–95th historical Day-of-year median Recent discharge

30-Day Flow History

Date	Discharge (CFS)	Gage Ht (ft)
May 28, 2026	3,640	41.67
May 27, 2026	4,140	41.92
May 26, 2026	3,840	41.77
May 25, 2026	2,970	41.32
May 24, 2026	2,610	41.11
May 23, 2026	2,580	41.09
May 22, 2026	2,530	41.06
May 21, 2026	2,390	40.97
May 20, 2026	2,360	40.95
May 19, 2026	2,470	41.02
May 18, 2026	2,790	41.21
May 17, 2026	3,300	41.50
May 16, 2026	4,080	41.89
May 15, 2026	4,410	42.05
Apr 20, 2026	3,700	41.70
Apr 19, 2026	3,740	41.72
Apr 18, 2026	3,770	41.74
Apr 17, 2026	3,830	41.77
Apr 16, 2026	3,920	41.82
Apr 15, 2026	4,010	41.86
Apr 14, 2026	4,100	41.90
Apr 13, 2026	4,150	41.92
Apr 12, 2026	4,110	41.91
Apr 11, 2026	4,100	41.90
Apr 10, 2026	4,180	41.94
Apr 9, 2026	4,270	41.98
Apr 8, 2026	4,210	41.96
Apr 7, 2026	4,000	41.85
Apr 6, 2026	4,050	41.88
Apr 5, 2026	4,180	41.94

Station Information

USGS Site No: 12500450
State: WA
County: Yakima County
Coordinates: 46.5343, -120.4673
Drainage Area: 3,479 mi²
Datum (ft): 903.4
HUC Code: 17030003

View on USGS NWIS →

Recent Extremes

Max discharge: 27,600 cfs

Dec 11, 2025
Min discharge: 859 cfs

Oct 18, 2025

Computed from the local daily-values archive.

Nearby Gauges

Ahtanum Creek at Union Gap, WA
0.3 mi · 76 cfs

Normal
Granger Drain at Granger, WA
18.8 mi · 53 cfs

High
Oak Creek Above Tieton River Near Naches, WA
21.1 mi · 9 cfs

Very High
Toppenish Creek Near Fort Simcoe, WA
21.7 mi · 20 cfs

Very Low
Yakima River at Umtanum, WA
22.7 mi · 1,790 cfs

Very Low