When was Mongaup Falls Reservoir last stocked?

The latest reported stocking was Apr 1 to 30, 2025 (brown trout, 1,340 fish), according to New York agency reports.

How often is Mongaup Falls Reservoir stocked?

Across all years on record, most stockings come in April.

Is Mongaup Falls Reservoir stocked often?

Number 15 of 37 stocked waters in Sullivan County by stocking days. Stocked more often than 67% of New York waters on our record. We count each day the agency reported stocking it.

What kind of trout are stocked in Mongaup Falls Reservoir?

Brown trout (10 stockings, 12,915 fish).

How warm is the water near Mongaup Falls Reservoir?

The USGS gage read 55°F on Nov 9. Prime range for trout (about 50 to 65°F): fish are feeding actively.

Mongaup Falls Reservoir trout stocking

Lumberland, Sullivan County, New York · lake · about 933 ft elevation

Mongaup Falls Reservoir was last stocked 19 months ago (Apr 1 to 30, 2025). We have 11 stockings on record since Apr 1, 2016. Most stockings come in April. Species stocked: brown trout.

Last stocked

19 months ago

Apr 1 to 30, 2025

Next planned

Not announced

Last 12 months

0 stockings

Water temperature

55°F

Ideal for trout

Number 15 of 37 stocked waters in Sullivan County by stocking days.
Stocked more often than 67% of New York waters on our record.

River conditions

USGS gage: MONGAUP R BELOW SWINGING BRIDGE RESERVOIR NY (2 km away).

Water temperature: 55°F
Flow: 124 cfs; about normal for the last six weeks
Gage height: 4.12 ft

Ideal for trout. Prime range for trout (about 50 to 65°F): fish are feeding actively.

Water temperature (daily high), last six weeks (°F), daily. Latest: 55 °F on Nov 8. The green band is the ideal range for trout.

Streamflow, last six weeks (cfs), daily. Latest: 125 cfs on Nov 8.

Latest reading Nov 9, 2026, 8:15 AM UTC. USGS data are provisional. Gage page at USGS.

Weather at Mongaup Falls Reservoir

This Afternoon
57°F
Mostly Sunny
1% rain · wind 8 to 12 mph
Tonight
39°F
Mostly Clear
9% rain · wind 6 to 9 mph
Monday
53°F
Scattered Rain Showers then Partly Sunny
28% rain · wind 9 to 14 mph
Monday Night
34°F
Mostly Cloudy
6% rain · wind 7 to 12 mph
Tuesday
59°F
Mostly Sunny
wind 7 to 10 mph
Tuesday Night
34°F
Mostly Clear
wind 7 mph

Forecast from the National Weather Service for this location, refreshed hourly.

When is Mongaup Falls Reservoir stocked?

Most stockings come in April.

By month, all years

Stockings of Mongaup Falls Reservoir by month, all years on record. This month is shown in blue.

Year by year

	Apr	May
2026	1
2025	1
2024	1
2023	1
2022		1
2021	1
2020	1
2019	1

What is stocked

Species	Stockings	Fish	Fish per stocking	Typical size
Brown trout	10	12,915	1,292	8.9 in

Stocking history

20260 stockings · 1 planned

Date	Species	Fish	Size
Week of Apr 15Planned Apr 15 to Apr 21	Brown trout	1,350	8.0 in

20251 stocking · 1,340 fish

Date	Species	Fish	Size
AprilLatest sometime this month	Brown trout	1,340	7.0 in

20241 stocking · 1,360 fish

Date	Species	Fish	Size
April sometime this month	Brown trout	1,360	8.2 in

20231 stocking · 1,280 fish

April brown trout, 1,280 fish

20221 stocking · 1,275 fish

May brown trout, 1,275 fish

20211 stocking · 1,400 fish

April brown trout, 1,400 fish

20201 stocking · 1,100 fish

April brown trout, 1,100 fish

20191 stocking · 1,330 fish

April brown trout, 1,330 fish

20181 stocking · 1,300 fish

April brown trout, 1,300 fish

20171 stocking · 1,240 fish

May brown trout, 1,240 fish

20161 stocking · 1,290 fish

April brown trout, 1,290 fish

From New York fish and wildlife agency reports, collected nightly and kept after the agency takes them down. Agencies revise reports; check the agency's report before you go. Seasons and limits: New York fishing regulations.

Where is Mongaup Falls Reservoir?

Lumberland, Sullivan County, New York. Approximate: the marker is the USGS place-name point for this water, not an agency location.

Directions Larger map New York fishing regulations

Stocked waters near Mongaup Falls Reservoir

Halfway Brookstream · 6 mistocked Apr 2025
Beaver Brookstream · 8 mistocked Apr 2025
Shingle Killstream · 8 mistocked Mar 2024
Neversink Riverstream · 9 mistocked Jun 2025
White Lakelake · 9 mistocked Apr 2019
Mongaup Riverstream · 11 mistocked Apr 2025
Lake Huntingtonlake · 14 mistocked May 2018
Rutgers Creekstream · 15 mistocked Mar 2025

All stocked waters in Sullivan County Stocked this week in New York

Questions about Mongaup Falls Reservoir

When was Mongaup Falls Reservoir last stocked?: The latest reported stocking was Apr 1 to 30, 2025 (brown trout, 1,340 fish), according to New York agency reports.
How often is Mongaup Falls Reservoir stocked?: Across all years on record, most stockings come in April.
Is Mongaup Falls Reservoir stocked often?: Number 15 of 37 stocked waters in Sullivan County by stocking days. Stocked more often than 67% of New York waters on our record. We count each day the agency reported stocking it.
What kind of trout are stocked in Mongaup Falls Reservoir?: Brown trout (10 stockings, 12,915 fish).
How warm is the water near Mongaup Falls Reservoir?: The USGS gage read 55°F on Nov 9. Prime range for trout (about 50 to 65°F): fish are feeding actively.