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Staff Profiles

Nicholas J Pieseski

Physical Scientist

Colorado Water Science Center

npieseski@usgs.gov

0009-0008-5948-0922

Denver Federal Center, MS-415
Building 53
Lakewood, CO 80232
United States

Expertise

hydrology

groundwater

geographic information systems

stable isotopes

Nick is a Physical Scientist with the Colorado Water Science Center (COWSC), in Lakewood, CO.

As a physical scientist in Colorado Rocky Mountains, Nick has assisted in a range of hydrologic sampling and monitoring projects. Projects involve work such as measurement and analysis of groundwater level data from monitoring wells, collection and management of water quality data pertaining to acid mine drainage and groundwater/surface-water interactions, and the creation of graphical or mapped visualizations of data trends for publication.

Education and Certifications

Bachelor of Arts, Environmental Earth Science, Sustainability, 2017. Miami University
Master of Science, Environmental Science - Water Systems, 2024. University of Colorado, Denver

Science and Products

Science
Data
Publications
Web Tools

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March 19, 2024

Making water tracing rock solid: national, geologic map-based visualization of USGS water strontium isotope data

Nationwide data source for USGS water strontium isotopes for hydrologic, ecologic, and forensic studies

Community for Data Integration (CDI)

Making water tracing rock solid: national, geologic map-based visualization of USGS water strontium isotope data

March 19, 2024

Making water tracing rock solid: national, geologic map-based visualization of USGS water strontium isotope data

Nationwide data source for USGS water strontium isotopes for hydrologic, ecologic, and forensic studies

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January 22, 2026

Geochemical and hydrologic data supporting assessment of a low-temperature geothermal system in Steamboat Springs, Colorado Geochemical and hydrologic data supporting assessment of a low-temperature geothermal system in Steamboat Springs, Colorado

Geothermal springs may be connected to both shallow and deep groundwater sources, and identification of variable spring sources may assist with resource management of geothermal systems. Numerous geothermal springs exist near the Yampa River in Steamboat Springs, Colorado and local water and land management agencies could benefit from information on the sources of these springs. This...

Colorado Water Science Center

December 30, 2025

Elevation data from Fountain Creek between Colorado Springs and the confluence of Fountain Creek at the Arkansas River, Colorado, 2025 Elevation data from Fountain Creek between Colorado Springs and the confluence of Fountain Creek at the Arkansas River, Colorado, 2025

The U.S. Geological Survey, in cooperation with Colorado Springs Utilities, has been collecting topographic data annually since 2012 at 10 study areas along Fountain Creek, Colorado. The 10 study areas are located along Fountain Creek between Colorado Springs and the confluence of Fountain Creek and the Arkansas River in Pueblo. This data release presents topographic survey data, Light...

Colorado Water Science Center

August 12, 2025

Hydrogeophysical, water quality, and stream tracer data collected along the Lake Fork Creek corridor and wetland area in Leadville, Colorado, 2023 and 2024 Hydrogeophysical, water quality, and stream tracer data collected along the Lake Fork Creek corridor and wetland area in Leadville, Colorado, 2023 and 2024

Multiple sources of mine drainage including discharge from the abandoned Dinero mine tunnel and two gulches flow into a wetland, known herein as the Dinero wetland along the Lake Fork Creek corridor. The Dinero wetland is approximately xx acres in extent. The Dinero wetland is being considered as a location for passive treatment of the mine drainage flowing through it. As such, study...

Water Resources Mission Area

March 12, 2025

National-scale dataset of strontium isotope compositions in environmental materials for the United States National-scale dataset of strontium isotope compositions in environmental materials for the United States

This database contains published strontium isotopic ratios (87Sr/86Sr) and associated sample collection data for strontium dissolved in environmental waters for the United States (conterminous, Hawaii, Alaska, and coastal seawater). Samples included in this version were collected and analyzed between 1963 to 2022.

Community for Data Integration (CDI), Geosciences and Environmental Change Science Center, Denver Radiogenic Isotope Lab

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January 29, 2026

Groundwater-level elevations in the bedrock aquifers of the Denver Basin aquifer system, Elbert County, Colorado, 2015–23 Groundwater-level elevations in the bedrock aquifers of the Denver Basin aquifer system, Elbert County, Colorado, 2015–23

Water users in Elbert County, Colorado, rely on groundwater from bedrock aquifers in the Denver Basin aquifer system (upper Dawson, lower Dawson, Denver, Arapahoe, and Laramie-Fox Hills aquifers) for approximately half of their water uses. Withdrawals from the bedrocks aquifers have increased to meet the water use needs of expanding regional population growth and development. The U.S...

Authors

Kelli M. Palko, Cory A. Russell, Nicholas J. Pieseski

Colorado Water Science Center

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May 21, 2025

Environmental Strontium Isotope Web Viewer Environmental Strontium Isotope Web Viewer

The Environmental Strontium Isotope Web Map is an interactive mapping application for displaying strontium isotope data in environmental materials (for example, waters) in geographic relation to underlying bedrock geology that drives the isotope composition. Together, these data form the basis for isotopic fingerprinting applications in geologic, hydrologic, ecologic, and forensic science.

National Cooperative Geologic Mapping Program, National Water Quality Program, Colorado Water Science Center, Geosciences and Environmental Change Science Center, Denver Radiogenic Isotope Lab