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Groundwater Monitoring for Pesticides and Nitrate

The Groundwater Protection Program has two primary objectives: (1) determine whether residues of agricultural chemicals are present in groundwater, and (2) where possible, determine the likelihood of an agricultural chemical to enter groundwater.

We complete our first objective through maintaining a network of permanent monitoring wells that are sampled at least twice annually. Samples are analyzed for agricultural chemicals by the Department’s Analytical Lab. The results are maintained in a database, analyzed to identify trends, and compared with Montana Numeric Water Quality Standards in Circular DEQ-7.

For the second object, we focus on both permanent monitoring wells and short-duration regional-scaled special projects to compare detections of agricultural chemicals across an aquifer or geographic region with general water quality parameters and relevant spatial data. We attempt to identify correlations between agricultural chemical detections with the water quality parameters and spatial data to determine which parameters influence the likelihood of an agricultural chemical to enter groundwater. We then extrapolate from our monitoring points to generalize the likelihood of agricultural chemicals to enter groundwater across the study areas, based on spatial data trends.

 

Click here for the
2017 Groundwater Protection
Program Factsheet / Summary

 

Click here for the 2016 Groundwater Protection Program Factsheet

 

Interactive ArcGIS Map Data

Historic pesticide analyte detection concentrations and well locations for the Ground Water Protection Program's Permanent Monitoring Well Network:

 

Click here
to view the GWPP Monitoring Well Map

 


Groundwater News

Public Notice: Noxious Weed Management Advisory Council Business Meeting on July 11

The meeting will be held at Comfort Inn, 455 McKinley Ave, Shelby, MT

Public Notice: Noxious Weed Management Advisory Council Business Meeting on July 11

Click here for the draft meeting agenda. Meeting details:

  • Noxious Weed Management Advisory Council Business Meeting
  • July 11, 2018
  • 1:00 p.m. - 4:00 p.m.
  • Location - Comfort Inn, 455 McKinley Ave., Shelby, M

MDA Seeking Pest Information from Lentil Growers

What vertebrate animals have damaged your crops?

MDA Seeking Pest Information from Lentil Growers

Helena, Mont. – The Montana Department of Agriculture (MDA) is seeking to gather information from lentil growers who have, are or will be suffering damage from vertebrate pests. As part of the MDA’s vertebrate pest program, Department staff gathers information and photos related to certain pests and the damages they cause to certain crops. This information helps the Department develop training materials, which in turn are used to educate producers to help them more easily identify and manage vertebrate pests.

State Hail Insurance Staff to Hold Meetings Throughout Montana

Producers reminded to get covered at hail.mt.gov

State Hail Insurance Staff to Hold Meetings Throughout Montana

Helena, Mont. – While we are currently dealing with the fits and starts of springtime in Montana, its important to remember that hail season is right around the corner. Staff from the Montana Hail Insurance program will soon be visiting communities throughout Montana to sell policies and educate producers on the program.  

Christopher Kelley, PhD
Hydrologist

Phone : (406) 444-5422
E-mail : CKelley@mt.gov
Fax : (406) 444-9493
302 N Roberts
Helena, MT 59601

 

Brett Heitshusen
Environmental Science Specialist

Phone : (406) 444-3271
E-mail : BHeitshusen@mt.gov
Fax : (406) 444-9493
302 N Roberts
Helena, MT 59601

 

Groundwater Files & Reports

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