Specialized Services

JEF provides a number of unique specialized services closely related to surface water hydrology and fluvial geomorphology. These services include: 

Stream Navigability Studies

We have performed 100’s of title navigability studies on streams in Arizona, Alaska, California, Nevada, Utah, and Montana. These studies include reconstruction of Statehood hydrologic and geomorphic stream conditions, evaluation of historical and archaeological records, and analysis of modern boating.

Riparian Boundary Determination

These analyses determine the limit of public/private ownership along navigable streams.

Litigation Support & Expert Witness Services

We perform forensic and causal analyses, determine impacts of flooding and development, and provide court testimony to attorneys, insurance providers and individuals.

Technical Training

We offer technical training classes in a wide variety of drainage and regulatory related topics.

Engineering Manuals & Guidelines

We have prepared hydrology, hydraulics, erosion, floodplain, alluvial fan, and development engineering guidelines for a variety of public agencies in the western United States.


Project Highlight: ADWR SSWG – Sheet Flooding.