USGS · 01642190

MONOCACY RIVER

USGS · 01642190LIVE

MONOCACY RIVER AT MONOCACY BLVD AT FREDERICK, MD

FREDERICK COUNTY, MD39.4436°N, -77.3823°W Updated 55 min ago

FLOW RATE

109cfs

AIR TEMP

93°F

WIND

6mph WSW

FISH INDEX

50SCORE / 100

GOOD · 3 OF 5

1D 7D 30D 1YR

Flow Rate Historical Avg

MEDIAN FLOW RATE · 1 YEAR

109cfs 54.1% vs avg

Optimal band: 134–182 cfs

PERIOD HIGH

4,105cfs

PERIOD LOW

48cfs

RUNNABLE

16%

last 1 year in band

Precipitation History

Precipitation · YTD

Normal

Near-normal year

2026 to date

21.4in

≈ normal

21.45 in of precipitation so far this year — about average for this point in the season (normal 20.89 in).

YTD Total

21.4in

This year so far

Normal to Date

20.9in

30-yr average

Typical Range

16.1–26.2in

10th–90th pct YTD

Departure

+3%

vs 30-yr normal

By Month

This year

Typical range

Normal

Jan: 2.68" · normal 3.13" (1.7–5.0)

Jan

Feb: 2.31" · normal 2.75" (1.4–4.8)

Feb

Mar: 5.28" · normal 3.80" (1.8–5.3)

Mar

Apr: 2.22" · normal 3.61" (1.9–5.4)

Apr

May: 5.64" · normal 3.79" (1.4–6.1)

May

Jun: 3.30" · normal 3.53" (1.6–5.8)

Jun

Jul: 0.02" (so far)· normal 3.73" (2.0–5.3)

Jul

Aug: normal 3.20" (1.6–4.5)

Aug

Sep: normal 4.35" (1.4–7.7)

Sep

Oct: normal 3.48" (1.0–6.1)

Oct

Nov: normal 2.98" (1.5–4.5)

Nov

Dec: normal 3.49" (1.7–5.1)

Dec

Baseline 1991–2020 · Source: Open-Meteo12:53 AM

Your History · MONOCACY RIVER AT MONOCACY BLVD AT FREDERICK, MD

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Station Location

39.4436, -77.3823

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

Site #01642190·USGS

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