THE MISSION OF MADERA IRRIGATION DISTRICT is to obtain and manage affordable surface water and groundwater supplies in a manner which will ensure the long-term viability of irrigated agriculture in the District.

Notice of Intent to Adopt a
Mitigated Negative Declaration


This is to advise that Madera-Chowchilla Water & Power Authority (MCWPA) has prepared a Mitigated Negative Declaration for the project identified below. As mandated by State law, the minimum public review period for this document is 30 days. The document referenced in the draft Mitigated Negative Declaration is available for review at the Chowchilla Water District office, 327 South Chowchilla Boulevard, Chowchilla, CA 93610.

The comment period for this document opens on April 12, 2017 and closes on May 15 2017 at 5:00 pm. Testimony at any future public hearings may be limited to those issues raised during the public review period either orally or submitted in writing by 5:00 pm the day the comment period closes.

Project Title:

National Pollutant Discharge Elimination System (NPDES) Permit for the Maintenance and Operations of Madera-Chowchilla Water & Power Authority 

Project Location:

The various facilities within Madera County. 

Project Description:

The NPDES Permit for which this report is made provides for the categorical exception from numeric water quality criteria and objectives for priority pollutants for the application of aquatic pesticides by public entities in the exercise of resource or pest management activities (Water Quality Order No. 2013-0002-DWQ).  As a special district of the State of California, Madera-Chowchilla Water & Power Authority is eligible for coverage under, and has applied for a General NPDES Permit relating to the application of aquatic pesticides directly to MCWPA agricultural water.

MCWPA’s aquatic herbicide use includes the application of copper sulfate into the MCWPA canals to control algae, at a 14 to 21 day interval throughout the irrigation season.  Copper is applied at a quantity at or below Environmental Protection Agency approved label prescribed usage.

The micro-irrigation methods employed throughout MCWPA’s service area allow for the most conservative use of available water resources, however, their implementation is contingent upon a water supply with limited algal population, and therefore the use of copper in the MCWPA canals is critical. 

MWPA’s established copper sulfate application points maximize the distance from each potential natural creeks’ receiving point and minimize impacts on receiving waters by promoting dilution and settling processes.  With additional mitigation measures and a monitoring plan, the aquatic pesticide application plan (APAP) is designed to be implemented to minimize impacts to less than significant. 

Preparation and Public Review:

The Initial Study and Proposed Mitigated Negative Declaration were prepared by Madera-Chowchilla Water & Power Authority.  Copies of the Initial Study and Proposed Mitigated Negative Declaration for this Project, as well as materials used in the preparation of the Initial Study, may be reviewed at Chowchillas Irrigation District’s office at the address below on weekdays between the hours of 8:00 a.m. and 5:00 p.m.:


Chowchilla Water District
327 S. Chowchilla Blvd.
Chowchilla, CA 93610
(559) 665-3747 Office
(559) 665-3740 Fax

The public review period for the Initial Study and Proposed Mitigated Negative Declaration will close on November 4, 2016.  If you have not responded with comments to the Proposed Mitigated Negative Declaration by the December 5, 2016 closing date, it will be assumed that you do not have any comments regarding the environmental assessment for this Project.  Please address any comments, in writing, to Douglas Welch, General Manager, Chowchilla Water District, 327 South Chowchilla Boulevard, Chowchilla, CA 93610, on or before 5:00 p.m., December 5, 2016.

To view a copy of the document click here.


NPDES Public Agency Notification
for Aquatic Weed Control

The State Water Resources Control Board (SWRCB) Water Quality Order 2013-0002-DWQ permit regulates applications of algaecides and aquatic herbicides, including the residual discharges to Waters of the United States. The permit requires that potentially affected public agencies are notified each year applications are to be carried out.   

Under permit enrollee number 5B20AP0002, Madera Irrigation District (District) intends to apply algaecides and aquatic herbicides during the 2016 water season between March and September. The applications are intended to reduce aquatic vegetation within the District water distribution system that adversely affect canal capacity and water quality. The algaecides and aquatic herbicides that may be used are Acrolein, Copper, Diquat Dibromide, Endothall, Fluridone, Glyphosate, Imazamox, and Penoxulam. In addition to these items, various aquatic-labeled adjuvants maybe be used.

Madera Irrigation District completed a California Environmental Quality Act Initial Study and Mitigated Negative Declaration, and was granted a State Implementation Plan Section 5.3 exception. The exception was granted by the SWRCB for short-term discharge of copper-containing aquatic herbicides registered in California to surface waters in excess of the California Toxics Rule priority pollutant criteria. 

For questions you may contact our Maintanance Department at 559-673-3514. Maps of the District are available under the "District Maps" option of the website.



1.    The Secretary of the Madera Irrigation District received the assessment book of Madera Irrigation District for the year 2017 from the Controller of said District on Friday, June 24, 2016.

 2.    That the 19th day of July, at the hour of 2:00 p.m. at the office of said District located at 12152 Road 28 ¼, Madera, California is hereby fixed as the time and place when and where the Board of Directors of Madera Irrigation District, sitting as the Board of Equalization, shall meet and hear any objections to the valuation, acreage, or any matter pertaining to the assessment coming before it.  That should the equalization session not close on the 19th day of July, the equalization session shall be continued to the 20th day of July at the hour of 2:00 p.m. and the 21st day of July at the hour of 2:00 p.m.  The equalization session will conclude on the 25th day of July at the hour of 2:00 p.m.         

 3.    That until the equalization is finished, during the office hours of the Secretary of the Board of Directors, the assessment book heretofore filed by the Controller of said Madera Irrigation District, shall be open for inspection of all persons interested, in the office of the Madera Irrigation District at the address set forth.

 4.    That at said time and place of hearing, the Board of Directors, sitting as a Board of Equalization, shall hear all objections presented to it regarding the correctness of any assessment and hearing all testimony relevant to said objections.  



Notice is hereby given that the 2015 Madera Irrigation audited Annual Financial Statement for the year ended December 31, 2015 is available for inspection and review at the Madera Irrigation District Office, 12152 Road 28 ¼, Madera, CA 93637 and on the District's website under the Finance Department tab.




NOTICE is hereby given that the SECOND INSTALLMENT OF THE 2016 MADERA IRRIGATION DISTRICT ASSESSMENTS was due and payable on November 2, 2015.  The second installment of the assessments will become delinquent at 5:00 p.m. on Monday, June 20, 2016.  After this time, a 5% penalty plus $10.00 in costs will be added to the Assessment amount.  Reminder notices to landowners were mailed May 20, 2016. Any purchaser of property within the Madera Irrigation District after March 1, 2016, who did not receive a billing for the 2016 Assessments, should call the District Accounting Office at (559) 673-3514.  Payments may be mailed to 12152 Road 28 1/4, Madera, California, 93637 and must be POSTMARKED NO LATER THAN JUNE 20, 2016.

District office hours are 7:00 a.m. to 4:00 p.m.; however, the District office will be open until 5:00 p.m. on Monday, June 20, 2016.

District Data Systems

In accordance with Senate Bill 272 Madera Irrigation District must catalog enterprise informatoin systems.
The following table contains the required information.

 System  Name  Current  System  Vendor  System Purpose  Data Category  Primary  Department  Custodian  Data  Collection  Frequency  Data  Update  Frequency
 ArcGIS  Esri  Geographic  information  system data  management and  analysis  Facility  locations,  owner names  & addresses  Engineering  Department  As needed  As needed
 Disclosure  Docs  SouthTech  Systems,  Inc.  Statement of  Economic  Interests for Staff  and Board  Members  Form 700  information  Administration  Yearly  Yearly
 Sage 100  Walpole &  CO., LLP  Finance  Management  Financial  transactions &  vendor or  customer  information  Finance  Department  As needed  As needed
 Storm  Central  Valley  Software  Solutions  Billing and  Management of  Assessments  and  Water Resources  Customer  Names,  Addresses, &  Water  Deliveries  Finance  Department  As needed  As needed