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Evaluating NOAA and PRISM Precipitation Data in Streamflow Generation Using HAWQS Model
Published in Surendra Kumar Chandniha, Anil Kumar Lohani, Gopal Krishan, Ajay Krishna Prabhakar, Advances in Hydrology and Climate Change, 2023
Vivek Verma, Manish Kumar Sinha, Triambak Baghel
The operational framework of HAWQS can be categorized into four main categories of initialization, customization, output management, and output demonstration as illustrated in Figure 18.2. The first step is the initialization in which the study area can be selected either through latitude or longitude, HUC ID, or with stat or end HUC ID. HUC can be further classified into large (HUC 8), medium (HUC 10), and small (HUC 12). HUC 8 covers the largest scale of 700 mi2, then HUC 10 which covers 227 mi2, and lastly, HUC 12 covers 40 mi2 (Fant et al., 2017). The delineation of the watershed is done on the basis of HUC selected. Thereafter, project name is entered followed by total simulation period for which model has to run. Warm-up period can also be entered in the model which runs the simulation without being collecting any data. This is usually done to get into conditions in which the actual model has to run. Next, intervals of the simulation result are then entered which can be daily, monthly, or yearly depending upon the requirement of the user.
Mapping Impervious Cover in Catchments Using High Spatial Resolution Aerial Imagery
Published in Yeqiao Wang, Fresh Water and Watersheds, 2020
Jessica Morgan, Yeqiao Wang, Naomi Detenbeck
The study area focused on four HUC 10 catchments and eighteen HUC 12 catchments in the state of Vermont and their surrounding MS4 areas (Figure 35.1). MS4 areas were included in the classifications because improved estimates of IC will be useful in meeting or setting regulatory requirements at this scale but were not included in the analysis because they are administrative boundaries that cross catchment boundaries and lack ecological significance. HUCs are defined as drainage areas that are delineated into nested, hierarchical classifications of surface areas draining to a specific point, based on hydrologic principles (USGS and USDA 2013). HUCs range in size from HUC 2 to HUC 16, with HUC 2s representing the broadest national scale and HUC 16s representing the finest local scale. The HUC 10 units ranged in size from 190.3 to 578.4 km2. HUC 12 units ranged in size from 55.1 to 165.4 km2. The HUC 12 catchments were selected because they were determined to contain the highest number of stormwater best management practices in the state of Vermont, over a range of IC. All HUC 10 and HUC 12 units contained less than 13.15% IC, making comparisons at higher levels of IC impossible (Table 35.1).
2 Nexus of Fossil Fuel Based Power Generation
Published in Subhas K Sikdar, Frank Princiotta, Advances in Carbon Management Technologies, 2020
In this section, we describe the characteristics of various watershed activities that are included in this holistic assessment study. Data collection is a challenging task for such a holistic assessment because we need to rely on multiple data sources that often have different spatial and temporal data resolutions. Thus, it is important to keep spatial and temporal consistency between data. In this study, watershed-scale data for the year 2014 is preferred because most data are available for this year. The watershed boundary is determined by the Hydrologic Unit Code (HUC) system that assigns a unique HUC code to each watershed (Seaber et al., 1987). Each HUC region is defined by distinct hydrologic features, such as rivers, lakes, and drainage basins. The Muskingum River Watershed (MRW) studied in this work corresponds to a region where 8-digits of HUC (HUC8) is assigned as 05040004. The MRW is located in southeast Ohio. Water flows from the MRW drains into the Muskingum River, which eventually flows into the Ohio River. Figure 1 shows land use and land cover features in the MRW.
Catchment characteristics, water quality, and cyanobacterial blooms in Washington and Oregon Lakes
Published in Lake and Reservoir Management, 2019
Vanessa J. Rose, William M. Forney, Richard A. Norton, John A. Harrison
We derived watershed delineations to account for unique contributing areas and land use connected with each study system. We used the National Hydrography Dataset (NHD) to define watersheds and the 2011 National Land Cover Database (NLCD) to determine land use and land cover (LULC) percentages within watersheds of each study system. The NHD includes a nested classification system of watershed boundary delineations that are each assigned a hydrologic unit code (HUC), the scale of which changes from spatially broad at low (e.g., HUC 2) levels to narrow and more defined at higher (e.g., HUC 12) levels. We started our analysis at the HUC 12-digit level, a more local delineation that includes tributary systems. Because boundaries at the HUC 12-digit level did not match the outlets of each study system spatially, we further adjusted the HUC 12 watershed delineations using reference geospatial data, such as NHD rivers, 2011 NLCD and digital elevation models (DEMs; S. 1). LULC percentages within each contributing watershed were calculated in ArcGIS using the NLCD, and 15 of the standard 16 classes were prepared for use in regression analysis. These classes were “developed – open space, developed – low intensity, developed – medium intensity, developed – high intensity, developed land (the sum of all developed classes), barren land (rock/sand/clay), deciduous forest, evergreen forest, mixed forest, shrub/scrub, grassland/herbaceous, pasture/hay, cultivated crops, woody wetlands, and emergent herbaceous wetlands.”
Identification and characterization of urban lakes across the continental United States
Published in Lake and Reservoir Management, 2021
Laura Costadone, Mark D. Sytsma
Watershed data were obtained from the Watershed Boundary Dataset (WBD) developed by the USEPA in partnership with the US Geological Survey (USGS) to support water resource applications. The WBD defines 6 hierarchical levels of hydrologic units derived from subdivision of land surface areas into geographic polygons. Each subdivision or hydrologic unit code (HUC) represents an area that can be either a part or an entire drainage basin. Many HUCs are not true topographic watersheds or basins. Since watersheds cannot be clearly defined in many regions, several studies have adopted the HUC dataset as convenient nationwide drainage subdivisions of surface areas (Omernik et al. 2017). We used the 12 digit HUC as a framework to identify urban subwatersheds.