What is a Step?

A step includes a set of instructions to perform a specific activity. For example, instructions for getting a time series of streamflow is a step. Similarly, plotting the streamflow hydrograph in Excel is a step. Separating baseflow from the streamflow hydrograph is a step. Each step has some input and output. For example, the baseflow separation step cannot be performed without an input streamflow hydrograph to create an output including the direct runoff hydrograph and the baseflow. Similarly, the streamflow hydrograph step cannot be performed without getting the streamflow data. The input and output structure associated with each step enables their use with other steps in more than one Unit. This page contains the list of existing steps available in the system.

List of all Steps



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Detection of Land Use Change in Floodplains Using Web-based Python Programming
Adnan Rajib, Texas A & M University-Kingsville
Human interventions are increasingly altering the world's floodplains. With the advances in remotely sensed earth observations and geoinformatics, we are now able to assess floodplain alterations by estimating ...

Periodic behavior
Jasmine Gregory, North Carolina State University
Time series data often exhibit cyclical behavior. One example is the regular shift between dry and wet seasons in many areas of the world. Such behavior is often referred to as seasonality or periodic behavior. In ...

Stationary and nonstationary behavior
Jasmine Gregory, North Carolina State University
Stationarity and nonstationarity are terms you may have encountered previously if you've taken water or climate related courses and are important for understanding changes in the Earth System. But what do ...

Autocorrelation
Jasmine Gregory, North Carolina State University
Correlation analysis is a standard tool used to understand how two variables change relative to one another. Autocorrelation is a form of correlation analysis can be used to understand how elements within the same ...

Bromide in the Allegheny River System
Tao Wen, Syracuse University
Before April 2011, it was acceptable to discharge Marcellus brines into rivers. Therefore, brines were discharged to some PA rivers through publicly operated treatment works (POTW) and industrial waste plants ...

How Pennsylvania Disposes of Brines Safely
Tao Wen, Syracuse University
We will explore the PA Oil and Gas Mapping tool in this portion of the exercise. For this module, you will learn how to query data, use basic functions and extract data. You will also be shown how to specifically ...

Earthquakes in Pennsylvania
Tao Wen, Syracuse University
Another environmental concern regarding shale gas development is induced seismicity. In this section of the module, you will learn how to tell if a seismic event in Pennsylvania is caused by mining activity, or if ...

Extract Earth Observations using HydroGlobe
Venkatesh Merwade, Purdue University-Main Campus
The objective of this step is to download MODIS evapotranspiration data for a geographic region. This step is created for some testing purposes and should not be used for any instruction at this point.

Creating a Time Series Plot in Excel
Purpose The purpose of this module is to demonstrate how to create a time-series plot using MS Excel. The module is developed by using USGS streamflow data as an example, but the same process can be followed for ...

Downloading NCDC Climate Data from Internet into a Text File
PurposeThe purpose of this exercise to demonstrate the steps involved in downloading climate (precipitation and temperature) data from the National Climatic Data Center (NCDC). The lesson is developed by using a ...

Introduction to Flood Frequency Analysis
Siddharth Saksena, Purdue University-Main Campus
The objective of this step is to familiarize students with the concept of flood frequency analysis. After reading the information provided in this step, the students will be able to understand the importance of ...

Downloading Annual Peak Streamflow Data from USGS
Siddharth Saksena, Purdue University-Main Campus
This step demonstrates how to download the United States Geological Survey's (USGS) annual peak streamflow data recorded at a USGS gauging station in the United States. In this step, the students will use the ...

Plotting the Flood Frequency Curve using Gumbel Distribution
Siddharth Saksena, Purdue University-Main Campus
The objective of this step is to make the students familiar with the concept of flood frequency analysis. This step assumes that the user already has information on the peak streamflow data for a USGS gauge ...

Flood Frequency Analysis using RWater
Adnan Rajib, Purdue University-Main Campus
Flood Frequency Analysis involves large amount of calculation and data processing, requiring significant level of understanding of the process and expertise. This module introduces RWater - an interactive online ...

Data Download
Natalie Nelson, University of Florida
Download temperature, dissolved oxygen, and water level data from three reaches (upstream, transitional, estuarine) of the St. Johns River, FL, USA using CUAHSI HydroClient.

Open and use a Jupyter notebook
Natalie Nelson, University of Florida
All data analysis will be performed using a cloud-based Jupyter Notebook that was created for this assignment. The Jupyter Notebook is accessed through GitHub from the command line.

Data Management
Natalie Nelson, University of Florida
Students will organize data in a format that allows for data manipulation and analysis using a programming language, such as Python or R.

Constructing a data-driven rainfall-runoff model
Tianfang Xu, University of Illinois at Urbana-Champaign
In this step, students will be instructed to execute the provided sample MATLAB codes ddm.m. Next, students will learn to evaluate the performance of constructed rainfall-runoff models.

Autocorrelation analysis of rainfall-runoff data
Tianfang Xu, University of Illinois at Urbana-Champaign
The goal of this unit is to build a model to simulate stream discharge. In this step, we will explore what are important factors that affect discharge.

Visualization of rainfall-runoff time series data
Tianfang Xu, University of Illinois at Urbana-Champaign
In this step, students will perform basic time series plotting using tools of choice, such as Excel, MATLAB or R.