USGS · 01643000

MONOCACY RIVER

USGS · 01643000LIVE

MONOCACY RIVER AT JUG BRIDGE NEAR FREDERICK, MD

MARYLAND39.4028°N, -77.3661°W Updated 55 min ago

FLOW RATE

131cfs

AIR TEMP

91°F

WIND

5mph SW

FISH INDEX

56SCORE / 100

GOOD · 3 OF 5

1D 7D 30D 1YR

Flow Rate Historical Avg

MEDIAN FLOW RATE · 1 YEAR

131cfs 52.4% vs avg

Optimal band: 184–250 cfs

PERIOD HIGH

4,876cfs

PERIOD LOW

83cfs

RUNNABLE

16%

last 1 year in band

Precipitation History

Precipitation · YTD

Normal

Near-normal year

2026 to date

21.4in

≈ normal

21.38 in of precipitation so far this year — about average for this point in the season (normal 20.9 in).

YTD Total

21.4in

This year so far

Normal to Date

20.9in

30-yr average

Typical Range

16.8–26.2in

10th–90th pct YTD

Departure

+2%

vs 30-yr normal

By Month

This year

Typical range

Normal

Jan: 2.66" · normal 3.16" (1.8–5.0)

Jan

Feb: 2.24" · normal 2.76" (1.5–4.8)

Feb

Mar: 4.38" · normal 3.81" (1.9–5.3)

Mar

Apr: 3.46" · normal 3.54" (1.9–5.2)

Apr

May: 5.18" · normal 3.73" (1.6–5.9)

May

Jun: 3.47" · normal 3.61" (1.7–6.1)

Jun

Jul: 0.00" (so far)· normal 3.93" (2.1–6.3)

Jul

Aug: normal 3.27" (1.7–4.9)

Aug

Sep: normal 4.53" (1.3–8.2)

Sep

Oct: normal 3.52" (1.0–5.5)

Oct

Nov: normal 3.00" (1.4–4.8)

Nov

Dec: normal 3.56" (1.8–5.4)

Dec

Baseline 1991–2020 · Source: Open-Meteo12:55 AM

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Station Location

39.4028, -77.3661

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DATA · USGS · NOAA · NWSUPDATED 2026-07-03 00:55 UTC

Site #01643000·USGS

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