ISG

Water Resources Engineer

345 North Reid Place Suite 300, Sioux Falls, SD 57103

On-site · Full-time · $75k–$150k (as posted)

First seen by offpeak October 6, 2026

Imagine a world where every drop of rain is harnessed to nourish the land, prevent floods, and sustain communities. As a Water Resources Engineer supporting the Surface Water group, you hold the key to transforming this vision into reality. Your expertise in designing innovative stormwater systems not only protects the environment but also ensures the safety and prosperity of rural areas. ISG is excited to expand our team to join our Water Business Unit, specializing in Rural Surface Water. You will join a dynamic team as an ISG Employee Owner working collaboratively with your fellow employee owners to develop creative solutions.

In this role, you will collaborate with ISG internal resources for design and project coordination, project execution, specification writers, visualization specialists, and construction administrators. Employee owners of all levels are involved in every aspect of design from conceptual design through construction. If this sounds exciting to you, keep reading!
Here are a few recent projects:

Lovin Farm Bioreactor, Pocahontas County, IA
Blue Earth County Ditch No. 57, Mapleton, MN

View additional ISG projects: Portfolio
ISG Surface Water Blog

Essential Duties

Stormwater Management Planning:

Develop and implement stormwater management plans, including stormwater management reports as applicable on project types to control runoff and prevent flooding
Design and oversee the construction of stormwater infrastructure such as retention basins, swales, and drainage systems
Proficiency in various modeling software including but not limited to, XPSWMM, PCSWMM, Infoworks ICM, HydroCAD, Hec-RAS, Hec-HMS, Hydraulic Toolbox and other software systems
Assist with submittal reviews, requests for information, correspondence, change requests, and change orders during the Construction phase of projects
Coordinate and assist with environmental studies, permitting, alternative analysis, and other technical deliverables

Hydrologic and Hydraulic Analysis:

Conduct hydrologic and hydraulic analyses to predict stormwater behavior and design effective control measures
Use modeling software to simulate stormwater flow and assess the impact of proposed developments

Environmental Compliance:

Ensure compliance with local, state, and federal regulations related to water quality and stormwater management
Prepare and submit necessary permits and documentation

Field Inspections and Monitoring:

Perform on-site inspections to monitor the effectiveness of stormwater management systems
Assist with the performance and adherence to plans and specifications during the construction process through our Construction Administrators
Conduct water quality sampling and analysis to ensure compliance with environmental standards
Provide QA/QC for drawings, documents, details, schedules or specifications using programs such as AutoCAD, Civil3D and ESRI ArcGIS that are completed by staff

Community Engagement:

Work with local communities, landowners, and stakeholders to address stormwater management issues
Provide technical assistance and education on best practices for stormwater management

Additional Duties:

Lead and/or support the design of the rehabilitation or replacement of stormwater and drainage infrastructure
Support and mentor staff through design consultation and QA/QC measures
Provide expertise on construction sites as needed
Subscribe to our goals and objectives, operating with a collaborative mentality
Meet with Clients and Contractors at their place of business or job site
Provide oversight and project leadership to drive the successful completion of surface water projects
Prepare and maintain project workplan, which includes schedules, budget, notes, etc. throughout the project lifespan
Assist in creating the project scope of services, as needed

We’ve listed a compensation range that reflects our expectations for this role, including both direct and indirect components. We understand that your experience and value may fall outside of this range. If you feel you're a strong fit but your compensation needs differ, we’re open to a conversation—let’s talk.

Skills, Knowledge and Expertise

Bachelor’s degree in civil/environmental engineering or bioproducts and bio-systems engineering
Professional Engineer (PE) licensure, required
Experience in managing projects within the surface water industry, such as stormwater management master plans, flood control/analysis, FEMA CLOMR/LOMR, streambank stabilization or restoration, and rural drainage
5-10 years of experience in Surface Water industry
Ability to travel to various job sites and ISG office locations
Strong communication, organization, analytical and interpersonal skills
Self-directed, organized and can work independently with minimal supervision

ISG Employee Owner Benefits

Medical, dental, and vision
Paid time off, pro-rated amount available on your start date
Paid holidays and paid volunteer time
Paid parental leave
Bi-annual profit sharing
Employee Ownership Stock Plan (ESOP)
401K retirement plan
Life insurance
HSA and FSA options
Bereavement leave
Supplemental voluntary benefits
Short term and long-term disability
Parking reimbursement, varies on office location
Cell phone plan reimbursement
Mileage reimbursement for ISG-approved travel