Basic Hydrology

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Course Title: Basic Hydrology
Course ID: HYD-300
Status: CLOSED
Date(s): November 5, 2019: 8:30am - 4:30pm
November 6, 2019: 8:30am - 4:30pm
Location: Mercer Slough Environmental Education Center
1625 118th Ave SE
Bellevue, WA
Instructor: Apryle Craig
Tuition: $695 / $645*
$645 / $595* (Before October 6, 2019)
Class is Closed



In this course, we will define, explain and correctly use terms and concepts of basic hydrologic processes including evaporation, transpiration, precipitation, infiltration, ground-water flow and surface runoff. We will understand the hydrologic cycle and the ways that humans impact hydrology including erosion, sedimentation, and contamination. We will solve basic hydrologic problems to estimate the magnitude and frequency of hydrologic events. We will learn methods to measure flow and discharge rates. Examples will be included from real environmental problems. 

Intended Audience:

Environmental professionals in a wide range of careers including habitat restoration, environmental sampling, and construction. 

Continuing Education Units: 1.40 CEUs

More Information

Course Topics

Water and hydrology background

Hydrological cycle

Soil properties and water

Aquifers, wells, water table

Measurements - discharge, flow rate, peak, Ordinary high water mark

Human impacts to hydrology

About the Instructor

Apryle Craig

Apryle Craig

Apryle Craig earned a BS in BioEngineering from the University of Pittsburgh and Master's in Ecology at Colorado State University. Her master's research investigated the impacts of elk browsing and riparian willow restoration on bird communities in Rocky Mountain National Park, CO. She brings extensive experience from Rocky Mountain National Park where she worked as a park intepretive ranger, communicating the park's natural resources to non-scientists. She then shifted to the Natural Resource branch where she oversaw vegetation monitoring, raptor monitoring, elk exclosures, and winter elk counts. To meet the national park's monitoring needs under an ever-constricting budget, Apryle hired seasonal field technicians and grew the park's citizen science programs. In these projects and in her graduate research, she used Excel and R to manage and analyze data. Apryle has held teaching positions at the University of Washington including Wildlife in the Modern World and Wildland Hydrology. She has led hands-on workshops at the University of Washington, Seattle, on camera trapping and GPS use. Apryle is currently completing her PhD in Environmental and Forest Sciences at the University of Washington. Her PhD research is investigating relationships between recolonizing wolves, deer, and vegetation in northeastern Washington. 

What to Bring

Pen or pencil to take notes and paper if you do not want to take notes in your manual.  Drinks and snacks will be provided each day and lunch will be on your own.

Billing Information

In order to guarantee a space in a course, the tuition must be paid in full TWO WEEKS before the first day of the course by either check or credit card. State and government agencies paying with a purchase order are allowed payment under the two-week time frame if a copy of the purchase order is received by NWETC.

If You Need to Cancel


  • With 31 or more days notice, we will offer a 100% refund or credit towards a future course. The credit is good for one year and may be applied to any course.
  • With 30-8 days notice, we will offer a course credit towards a future course. The credit is good for one year and may be applied to any course.
  • With fewer than 8 days notice, there is no course credit available

*Please note that attendee replacement is welcome at any time

Disability Accommodations

Disability Accommodations:

To request disability accommodations, please contact us at or 425-270-3274 at least 30 days prior to the event.


  • From:

  • To:
  •   1625 118th Ave SE Bellevue, WA 98005



*Reduced tuition available to employees of Native American tribes, nonprofits, and government agencies; students; and NAEP members.

If you have any trouble registering please call (425) 270-3274 ext 103
Please wait to receive a course confirmation email, roughly one month prior to the class, before making any travel arrangements. Please review what to bring!


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