
Check which species have trophy potential in Deer Flat Nampa Canal
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Deer Flat Nampa Canal is a canal located in Canyon County, Idaho, United States. It is most popular for fishing Largemouth bass, Smallmouth bass, and Channel catfish.
Learn what time of year and day to go fishing at Deer Flat Nampa Canal. Download Fishbrain today to look for new fishing spots, scout new fishing access, or prep for your next trip.

Disclaimer: Always check local fishing regulations, water access rights and land ownership before fishing, regardless of any catches logged in that area by the Fishbrain community. Fishbrain has mapped millions of acres of government-owned land across the USA to help you identify potential fishing access, but you are responsible for ensuring compliance with all legal requirements.
Fishing regulations in Idaho can change throughout the year. Make sure to check this page before fishing for the most up to date rules and regulations for the current season. Local regulations govern when you can fish, the max size of the fish you can keep, how many fish you can keep, and more.
Below you will see fishing regulations for catching Largemouth bass as of April 1st, 2026. To view regulations for a different fish species, please click on your preferred species in the drop-down.
Seasons
Bag limit
Min size
Measurement
Aggregate
Micropterus nigricans
15 ratings
4.5 miles away
5.7 miles away
13.0 miles away
13.5 miles away
17.1 miles away
19.6 miles away
21.0 miles away
35.9 miles away
56.2 miles away
117.6 miles away
122.2 miles away
130.1 miles away
140.9 miles away
160.5 miles away
180.9 miles away
191.8 miles away
193.5 miles away
196.3 miles away
202.4 miles away
203.4 miles away
215.1 miles away
215.9 miles away
217.4 miles away
219.5 miles away
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