Cities of Reno and Sparks, and Washoe County,
Truckee River Basin Watershed Program
- Developed watershed and water quality models to evaluate various watershed management alternatives.
- Identified potential non-structural alternatives for implementation on the Truckee River to improve water quality.
- Managed a Coordinated Monitoring Program to support watershed/water quality modeling work and assess compliance with water quality objectives.
Carollo developed a watershed program for the Truckee River Basin, including the cities of Reno, Sparks, and Washoe County, Nevada. This work included developing models to provide the technical basis for recommendations for water quality trading for nutrients and total dissolved solids (TDS) on the Truckee River.
The most challenging aspect of the project was to develop revised TMDLs, a water quality trading framework and agreement and associated permit language. This required the successful development of a system of watershed and water quality models to provide the scientific and engineering basis for increased nutrient assimilative capacity in the river.
Carollo identified a number of potential nonstructural alternatives for implementation on the Truckee River with the potential to improve water quality. Alternatives included river and riparian restoration, storm water management practices, water augmentation, septic tank conversion, water reuse and others. Based on a review of the potential alternatives, a list of potential project scenarios including structural and nonstructural alternatives, was developed for modeling evaluation.
The Carollo team also managed a Coordinated Monitoring Program (CMP) to support the watershed/water quality modeling work, assist in developing a revised TMDL, assess compliance with the water quality objectives, and improve data quality. Developing the CMP involved identifying the past and current monitoring activities in the region and evaluating the water quality model, watershed model, NPDES permit, and other agency needs.