Tag Archives: Surface water
by Lara Saikali, Cartographic Product Engineer, Esri. Several community resource centers are available through the ArcGIS Resource Center, including a page dedicated specifically to Hydrology. The Hydrology Resource Center is an online community center that promotes hydro information products created … Continue reading
By Lori Armstrong
The World Water Online (WWO) group in the ArcGIS Resource Center has 12 new web map applications based on the SSURGO soil survey database. These apps show soil characteristics that are useful for hydrologic modeling, such as drainage class, available water storage, water table depth, and ponding frequency. The hydrologic group code, which classifies soils based on infiltration rate, can be used to calculate curve number and model how much rain falling in an area will become runoff.
by Steve Kopp, Geoprocessing and Spatial Analysis Team, Esri
Jump-start your conference a day early by joining us for the 20th annual pre-conference Water Resources Workshop on Sunday July 7th. The Water Resources Workshop is a FREE, full day workshop focused on emerging trends in the integration of GIS and Water Resources and how you can use them in your work.
by Cynthia Deischer and Ray Postolovski
Juliet: “What’s in a name? That which we call a rose by any other name would smell as sweet.”
Romeo and Juliet meet in Shakespeare’s tale. They are predestined from the start because of their surnames. Juliet tells Romeo that a name is an artificial and meaningless convention. Meaning what matters is what something is, not what it is called. However in the geospatial community, a name is far from meaningless and what something is named is just as important as what something is. Continue reading
We’d love to hear your feedback. Download the BETA 10.1 Arc Hydro Tools (32MB). Please contact firstname.lastname@example.org with any and all feedback. Arc Hydro Tools are free with your ArcGIS software license. In the coming months, documentation for the tools … Continue reading
by Kathy Isham, National Hydrography Dataset, USGS The US Geological Survey (USGS) has redesigned its applications page for the National Hydrography Dataset (NHD). The new applications page is organized into the six different types of applications that highlight how USGS … Continue reading
by Caitlin Scopel, Cartographic Product Engineer, Esri
The Beta version of Arc Hydro tools for ArcGIS 10.1are now available. To download the tools (32MB) Continue reading
by Laurie Williams, Senior Planner/Watershed GIS, County of Marin, CA
The Department of Public Works of Marin County, CA (just north of San Francisco, CA) launched a watershed program to integrate flood protection, stream and wetland habitat restoration activities, fish passage, and water quality improvements. Instead of looking at flooding issues on a site by site basis, we solve flooding problems at a watershed scale, and employ solutions such as habitat restoration to reduce flood risks.
From the outset, we decided to base our stakeholder outreach, collection of scientific studies and technical reports, and dissemination of information from the Marin County Watershed Program website (http://www.marinwatersheds.org) in order to save paper resources, be more user-friendly, support community outreach and more efficiently advertise our updates than is possible with more traditional printed reports and documents.
Our website is the major repository of meeting notices, posted reports, and maps. Our website designer, Athena Design, chose a color palette to enhance and reflect the colors of nature: the blues of water, the greens of plants, and browns for earth tones; orange splashes complement the dominant blue. We use the palette extensively in producing the watershed maps, as well as for printed materials and PowerPoint presentations for a unified design.
by Stephen Brown, Graduate Research Assistant, Dept. of Civil Engineering, University of New Mexico
Hydrologic data analysis frequently begins with a tedious march through the gauntlet of national data repositories, downloading data gage-by-gage until you have acceptable coverage for your region. The march continues as you homogenize the gage data to match locally collected values in an attempt to identify trends or simply graph the values for comparison. A majority of research time may be spent simply conducting data discovery and management.
Incorporating a Hydrologic Information System into your workflow can save you time and increase analysis opportunities. The Consortium of Universities for Advancement of Hydrologic Science, Inc. (CUAHSI) has developed an open source Hydrologic Information System (HIS) specifically to aid researchers with data discovery, analysis, and management.