Waterlands
Helena Test Coulee 2 River
USGS · 06666667
HELENA TEST COULEE 2 RIVER
USGS · 06666667LIVE

Helena Test Coulee 2

HELENA, MT46.6166°N, -112.0425°W
Flow Rate Historical Avg
MEDIAN FLOW RATE · 1 YEAR
cfs
No flow data available
Precipitation History

Precipitation · YTD

Normal

Near-normal year

2026 to date

11.4in

≈ normal

11.44 in of precipitation so far this year — about average for this point in the season (normal 12.86 in).

YTD Total

11.4in

This year so far

Normal to Date

12.9in

30-yr average

Typical Range

10.2–16.6in

10th–90th pct YTD

Departure

-11%

vs 30-yr normal

By Month

This year
Typical range
Normal
Jan: 0.71" · normal 0.90" (0.6–1.3)
Jan
Feb: 1.16" · normal 0.92" (0.4–1.5)
Feb
Mar: 2.21" · normal 1.38" (0.8–2.2)
Mar
Apr: 1.66" · normal 2.33" (1.6–3.3)
Apr
May: 2.45" · normal 2.99" (1.9–4.0)
May
Jun: 3.10" · normal 3.55" (1.6–5.4)
Jun
Jul: 0.15" (so far)· normal 1.58" (0.5–3.4)
Jul
Aug: normal 1.40" (0.4–3.0)
Aug
Sep: normal 1.52" (0.6–2.2)
Sep
Oct: normal 1.49" (0.7–2.6)
Oct
Nov: normal 1.16" (0.5–1.8)
Nov
Dec: normal 1.05" (0.4–1.7)
Dec
Baseline 19912020 · Source: Open-Meteo06:37 UTC
Your History · Helena Test Coulee 2

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Station Location

46.6166, -112.0425
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DATA · USGS · NOAA · NWS
Site #06666667·USGS

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