Information Center

NEW! Find out when & where RoundUp applications are taking place this week:
Click here & Scroll Down

Aquatic Herbicides

The bright red dots are where Nautique, Cutrine Plus, Cutrine Ultra, and Captain (copper-based herbicides) are dripped
directly into the water monthly during the irrigation season, between April - October.

To know when drip applications are taking place, visit NID's 2019 Aquatic Weed Control Schedule.

The canal sections highlighted in bright green are "randoms" which are natural drainages that were captured and incorporated into the canal system.

Map sources supplied by NID via public records requests: Randoms Map and Aquatic Application Sites Map
Please contact us at with any questions.

Note: This map is intended for reference only. The information provided on this map may not be accurate.

What levels are safe? See 2008 government report about Copper in drinking water

Terrestrial Herbicides

NID uses a multitude of terrestrial herbicides throughout the district to control vegetation.

Roundup Custom (active ingredient glyphosate) is one of the primary terrestrial herbicides
sprayed along irrigation canals in accordance with NID's "bare ground herbicide program."

NEW! To know when terrestrial applications are taking place this week, visit NID's vegetation control page and scroll down.

About RoundUp

Recent court cases & research studies indicate that exposure to RoundUp (glyphosate) may cause negative health impacts such as non-Hodgkin’s lymphoma.

Furthermore, in a first-of-its-kind study by Washington State University, "researchers saw descendants of exposed rats developing prostate, kidney and ovarian diseases, obesity and birth abnormalities."
(April 2019, WSU News)

Another WSU publication found that in some cases, "people living within 1 kilometer of an area that had sprayed glyphosate were nearly one-third more likely to die from Parkinson’s disease before reaching the age of 75."
(March 2019, OPB)

To see where RoundUp has been banned or restricted already around the world, click here.

A complete description of NID's 2019 weed management program can be found here:

weed management program

See when and where Roundup was sprayed between 2011-2018:


Are you interested in learning more about NID?

Public Records Requests are very straightforward and get you answers. Fill out your own here!

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Contact Us

To find out about Safe Ditches, or to send us pictures to add to each drip site, please email us at: