Back to map

Big Johnson Reservoir

Colorado
1.11 km²
38.7499, -104.6943
15 species
NHD 128019199
Open interactive map →
Imagery © Esri
View on map Google Maps Apple Maps

Find a fishing partner near Big Johnson Reservoir

Match with other anglers nearby, share the boat, learn from each other and become better fishermen together — free to join.

Open Fishing BuddyExplore the fishing map

About Big Johnson Reservoir

Big Johnson Reservoir is a natural lake or pond in Colorado, United States. It covers approximately 1.11 km² (274 acres). The lake centroid is located at 38.7499° N, 104.6943° W. 15 fish species are commonly found in waters like this one, including 2 introduced species. Lake boundary and identifier come from the USGS National Hydrography Dataset.

At a glance

Best season
April – October
Long open-water season
Natural lake
Medium
Great for a day trip
Species diversity
Diverse
15 species in this region
Access
Public waterbody
Check Colorado fishing regulations

Weather at Big Johnson Reservoir

Loading forecast…

Best fishing times today

Day length: 11h 33m
Dawn12:34
Sunrise13:01
Sunset00:34
Dusk01:00

Bite windows today

  • Dawn12:04 – 14:01Excellent
  • Morning14:01 – 18:47Good
  • Midday18:47 – 21:34Calm
  • Afternoon21:34 – 23:34Good
  • Dusk23:34 – 01:30Excellent
  • Night01:30 – 12:04Good
Moon: 11% · waning↑ 09:51

Fish species

Species data comes from GBIF and is refreshed by donors.Support this →

Showing 15 of 15 species

Gear & tips for rainbow trout

Rod
5- to 7-weight fly rod
Sage X
Vision XO
Loop Q
Reel
5/6-weight fly reel
Mainline
WF-5/6 floating line + intermediate
Leader
Tapered + 0.20 mm tippet
Lures / bait
  • Streamers
  • Egg patterns
  • Nymphs
  • Dry flies
  • Boobies
Find fly fishing gear at Sportfish
Season
April–November (put-and-take year-round)
Time of day
All day
Tip

Put-and-take fishing is common. Vary your depth. Popular Swedish waters: Bunn, Sommen and many small stocked put-and-take ponds.

Full guide

Plan your trip to Big Johnson Reservoir

Everything you need before you launch — license, regulations, and current water conditions.

Buy Colorado fishing license
Colorado Parks & Wildlife
Water conditions & levels
USGS gauge data near Big Johnson Reservoir
Browse more fishing tips from the community

Plan a fishing day trip

How far are you willing to drive? We'll show other Colorado lakes within your range.

50 mi

Nearby lakes

See all fishing lakes in Colorado →
Sponsor this lake

For $5/month you help keep species, boundaries and coordinates fresh for 35 000+ lakes. FishMap is independent and community-funded.

Become a supporter →

A business wanting to appear here? Advertise & partner →

Frequently asked questions

What fish species live in Big Johnson Reservoir?

Species you can expect in or near Big Johnson Reservoir include Lake Trout, Rainbow Trout, Crappie, Yellow Perch, Flathead Catfish, Northern Pike, Smallmouth Bass, Largemouth Bass, and others. The list is based on species present in Colorado waters and GBIF occurrence records.

How big is Big Johnson Reservoir?

Big Johnson Reservoir covers approximately 1.11 square kilometres (274 acres), based on the USGS National Hydrography Dataset.

Where is Big Johnson Reservoir located?

Big Johnson Reservoir is located in Colorado, United States, with its centroid at 38.7499°, -104.6943°.

Bass Pro Shops gift card

Bass Pro Shops gift card — October deal

Ad

A digital gift card delivered by email, redeemable at Bass Pro Shops and Cabela's in the US — in store and online. Great for fall fishing gear or as a gift for an angler. October only.

$50$100$250

Photography and fishing go hand in hand

Ad
10% off Retropia

A good catch photo turns a session into a memory. The soft, grainy disposable-camera look — captured optically with Retropia's lens — gives an ordinary fish picture real character. Get 10% off through the link in our photo guide, no code needed.

Read the photo guide

Data sources: USGS National Hydrography Dataset · GBIF