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Preparing for Monsoons and Beyond

Stepping up to the challenge through stormwater maintenance 

Post Date: 04/29/22


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You may notice a lot of work happening in our drainages this spring. The Spruce Wash Watershed is getting some major infrastructure improvements to lessen the impact of flooding in Flagstaff neighborhoods. Work is underway throughout the wash, beginning with alluvial fan restoration and sediment reduction by the Coconino County Flood Control District below the Museum Fire burn scar, downstream to the Park Sediment Basins Project, then channel improvements from Cedar Ave to Dortha Ave, a large concrete box culvert at Dortha Ave and regional detention basins at Killip Elementary School. You can get updates on these projects at the Museum Flood Projects webpage. Collaborations with the Flood Control District, as well as state and federal agencies to mitigate damage from floods will continue into the future.  

Channel Maintenance 

Since summer 2021, we have been systematically clearing drainages, ensuring the infrastructure is prepared to handle monsoon season and beyond. Our GIS Management System has tracked over 740 closed-channel conveyance systems (pipes, culverts, basins) cleaned out since July, as well as cleanings and improvements in over 55 open-channel drainages, resulting from 139 inspections. Work can be followed on the Stormwater Maintenance Map.  

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Blog Archive


March: The Phoenix Avenue Bridge Project is Complete!

February: Wildcat Hill Digester Complex Expansion

January: Water Services Focuses on Efficiency


November: A Roadmap to Future Solutions

October: Spruce Wash Flood Projects Continue

September: Telling the Story as We Plan for the Future

August: A Summer of improvements - Getting Tanked Up (PDF)

July: Testing Groundwater Recharge Strategies with Recycled Water (PDF)

June: Managing Flagstaff's Sewer Infrastructure with GIS Technology (PDF)

May: Flagstaff Plans for a New Groundwater Well in its Portfolio (PDF)

April: Coconino Estates Improvements Continue This Summer (PDF)

March: Keep Flagstaff's Water Clean: Only Snow and Rain in Stormwater Drains (PDF)

February: Rio de Flag Water Reclamation Plant Receives Necessary Upgrades (PDF)

January: McAllister Well and Pumphouse Adds Capacity to our Water System (PDF)


December: Woody Mountain Clarifier Project Wraps Up 2020 Capital Improvements (PDF)

November: Updates on Capital Improvement Projects Started in Summer 2020 (PDF)

October: Planning for Flagstaff's Water Future (PDF)

September: Flagstaff Water Services Receives Two National Water Conservation Awards (PDF)

August: Updates on Stormwater Maintenance in Flagstaff (PDF)

July: Ground-Breaking Infrastructure Upgrades Continue This Summer (PDF)

June: Focus on Infrastructure Development for Summer 2020 (PDF)

augMay: Brad Hill, Water Services Director, Retires After 12 Dedicated Years (PDF)

April: Keeping Your Water Clean and Safe (PDF)

March: Linda Vista Drive Construction Tackles Two Water Projects Simultaneously (PDF)

February: Are There "Forever Chemicals" in Our Drinking Water? (PDF)

January: Planning for the Next Decade (PDF)


July: Inner Basin Pipeline repaired just in time to aid Fire Operations (PDF)

June: Control Room Modernization at Lake Mary Water Treatment Plant (PDF)

February: Upgrades at Rio Water Reclamation Plant Improve Efficiency & Safety (PDF)


December: NAU and Flagstaff Water Services Create Winning Partnerships (PDF)

November: I-40 Transmission Line (PDF)

June: New Aerator Protects Aquatic Life in Frances Short Pond (PDF)

May: How TV Vans are a Driving Force for Efficiency (PDF)

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