Water Quality

Water quality design is used to prevent and clean up exisiting water pollution.

It can also help communities make sustainable choices that reduce and prevent future water quality problems.

• Iowa Stormwater Manual
  
  
• Iowa Statewide Urban Designs and Specifications

Hydrology and Hydraulics

Evaluation of watershed projects, including the investigation of present land use and future developed conditions.

Hydraulic design of culverts, both precast and cast-in-place solutions.

Bridge Scour

Scour, the erosion of soil around a bridge foundation, is one of the leading causes of bridge failures.

NieKo can analyze current structures for scour as well as give recommendations for proposed structures.

We have developed a number of MathCad and Microsoft Excel sheets, based on HEC 23 "Bridge Scour and Stream Instability Countermeasures Experience, Selection, and Design Guidance", to aid designers in predicting scour occurrences around bridge piers and abutments

• NieKo MathCad/Excel Sheets
  
  
• HEC Hydraulics Engineering