Sand Creek Right Bank Tributaries 

The Urban Drainage and Flood Control District, in partnership with the City of Aurora, have initiated an Outfall Systems Plan to assess the existing drainage capacity along the right bank of Sand Creek and provide analysis and recommendations for future stormwater infrastructure improvements. Merrick & Company was selected to complete this project.

The Sand Creek Right Bank Tributaries OSP study area consists of approximately 8.0 square miles with a variety of land uses. The majority of study area is located in Adams County with a large portion south of Colfax Avenue within Arapahoe County. The study area is roughly bounded by Sand Creek to the south, I-225 to the west, E-470 to the east and the Sand Creek/Irondale Gulch basin divide to the north. Notable landmarks within the Sand Creek Right Bank Tributaries watershed include the Highline Canal, Aurora Sports Park, I-70, I-225, E-470, and Colfax Avenue. Overall, flow within the watershed flows South and West where it outfalls to Sand Creek.

Within the study area, many of the existing storm conveyance systems are undersized, causing potential flooding along major highways and roadways.



















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Meeting Minutes

Meeting Date Minutes
Kick-off Meeting June 10, 2014 PDF
Hydrologic Update July 28, 2014 PDF
Hydrologic Update January 5, 2015 PDF
Alternative Kick-off Meeting          February 5, 2015 PDF
Public Information Open House June 23, 2015 PDF
Alternatives Progress Meeting July 2, 2015 PDF
Conceptual Progress Meeting September 17, 2015 PDF
Conceptual Progress Meeting December 8, 2015 PDF













Schedule & Deliverables

Task Date Status
Notice to Proceed July 14, 2014 Issued
DRAFT Baseline Hydrology Report November 2014   PDF
FINAL Baseline Hydrology Report March 2015 PDF
DRAFT Alternatives Evaluation Report May 2015 PDF
FINAL Alternatives Evaluation Report July 2015 PDF
DRAFT Conceptual Design Report October 2015 PDF
FINAL Conceptual Design Report January 2016 PDF

Contacts for
Questions & Comments

Merrick & Company


Brian Chevalier, PE
Project Manager

Aaron Asquith, PE
Senior Project Engineer

Clare Steninger, EIT
Design Engineer

Urban Drainage and
Flood Control District


Shea Thomas, PE
Sr. Project Engineer
Master Planning


City of Aurora

Bill McCormick, PE
Associate City Engineer

Sarah Young, PE
Planning Services Manager

Southeast Metro Stormwater Authority (SEMSWA)

Angela Howard, PE
Master Plan Coordinator

Arapahoe County

Sue Liu, PE, CFM
Public Works & Development, Engineering Services Division