@USGS: National Hydrography Dataset / Watershed Boundary Dataset Map Service Improvement

Here’s the release from the USGS:

As part of an ongoing effort to improve the suite of hydrography web-based map services, the USGS will separate the services for the National Hydrography Dataset (NHD) and Watershed Boundary Dataset (WBD).
Currently, the NHD dynamic service, “Hydrography (inc. watersheds)” includes both NHD and WBD layers. The existing address will be updated to include only NHD layers, and a new endpoint will be designated for WBD services.

The NHD and WBD represent inland waters for the U.S. as a part of The National Map. The NHD represents the drainage network with features such as rivers, streams, canals, lakes, ponds, coastline, dams, and streamgages. The WBD represents drainage basins as enclosed areas in eight different size categories.

Focusing these services to two endpoints enables the USGS to isolate changes and issues, and continue to improve the performance of each set of services independently. When complete, users will have the choice to consume the services of NHD or WBD independently. Accessing the WBD services will not require users to consume the additional NHD layers, and accessing NHD services will not require users to have to consume the additional WBD layers. Separating the services and increasing resources available has improved performance.

This change will impact applications presently consuming the combined NHD and WBD layers from the existing service address. Once this is implemented, users who would like to consume the WBD dynamic services will need to use the new service endpoint. In addition, users currently consuming the combined service may need to update application configurations for display of the desired layers.

Additionally, two NHD/WBD-related web services are being retired at the end of April. See the summary below for more information.

An announcement will be posted in the “What’s New” section on the The National Map website once changes are implemented.

Summary of changes to National Map Hydrography service endpoints

New – Hydrography data service endpoints:

1. National Hydrography Dataset

  • Function: Provides national hydrography data
  • Endpoint: https://services.nationalmap.gov/arcgis/rest/services/nhd/MapServer
  • This NHD endpoint remains the same, the WBD layers have been removed.
  • 2. National Watershed Boundary Dataset

  • Function: Provides watershed boundary data
  • Endpoint: https://services.nationalmap.gov/arcgis/rest/services/wbd/MapServer
  • 3. Hydrography (cached)

  • Function: Provides a fast USGS Topo styled hydrography overlay
  • Endpoint: https://basemap.nationalmap.gov/arcgis/rest/services/USGSHydroCached/MapServer
  • This service was announced and made public March 2017 and is also available as a WMTS service.
  • Retiring at the end of April 2017

  • NHD Base Map (former primary tile cache)
  • Function: Cached base map of hillshade, NHD and WBD combined
  • Endpoint: https://basemap.nationalmap.gov/arcgis/rest/services/USGSHydroNHD/MapServer
  • USGS NHD Base Map – Below 18K Scale Dynamic

  • Function: Dynamic map service used below 18K to work along with older NHD Base Map cache. This also contains hillshade, NHD and WBD combined
  • Endpoint: https://services.nationalmap.gov/arcgis/rest/services/USGSHydroNHDLarge/MapServer
  • For any questions, comments, or concerns regarding this update, please contact Ariel Doumbouya (atdoumbouya@usgs.gov).

    #Snowpack/#Runoff news: Basin High/Low graphs show a steep drop in SWE

    A water drop’s journey: A Las Vegas newspaper produces a splendid, little video on how a desert city’s water gets where it needs to be

    Arizona Water News


    Just what does it take to quench the thirst of two million people living in the middle of a desert?

    Especially in these drought years, news media have become adept at telling us what it takes to deliver water to communities — what it takes to quench the thirst of desert-dwellers and others in the Southwest.

    The Las Vegas Review Journal recently did a marvelous job of showing readers — rather than merely telling them — precisely what it takes for a drop of water to exit Lake Mead (Sin City’s primary water resource) and travel to a residential water faucet.

    Produced by Rachel Aston of the Review-Journal, the video starts with that basic question — “What does it take to quench the thirst of two million people” living in the middle of a desert? — and escorts viewers on that journey.

    (For traditionalists, Review-Journal reporter Henry Brean provided…

    View original post 114 more words

    #Drought news: D1 (Moderate drought) erased along the #Colorado #Kansas border

    Click here to go to the US Drought Monitor website. Here’s an excerpt:


    An active weather pattern provided above-normal precipitation during the USDM period (April 11-18) in much of the Southern Plains, West, Northwest, and parts of the Midwest. Below-normal precipitation dominated the Rockies, Southwest, Southeast and Northeast. Average daytime temperatures were generally above normal across much of the CONUS with the exception of the Northwest where temperatures were generally 3 degrees cooler than normal. Much of the Mid-Atlantic, Ohio Valley and Central Plains were 9-12 degrees above normal for the period. Drought conditions expanded and intensified for much of the Southeast where the lack of rains have begun to parch the soils. In the South, Texas continues to see above normal precipitation resulting in a continual decrease in overall area covered in drought (D1-D4). Meanwhile in the West, the onslaught of Pacific storms continue to bring copious amounts of moisture to the region, swelling the reservoirs, threatening snowpack records and padding the record high precipitation amounts. Additional information on the indices, impacts and changes in drought status can be found in the regional sections below…

    High Plains

    Precipitation in the High Plains region for the period was quiet for the most part with the exception of precipitation in eastern South Dakota and eastern Nebraska. Totals there amounted to about an inch or less, near to slightly above normal. Elsewhere was dry as the frontal systems that made it through were starved of moisture. In eastern Colorado, moderate drought (D1) was lifted along the Colorado and Kansas border as short and long term indicators appear to have mostly rebounded from the drought that began in that area last autumn. Also in eastern Kansas, D0 was trimmed back following the above normal precipitation at 60 days…


    New Mexico had its warmest start to the year through March, while Arizona had its fourth warmest start. It was reported that the grasses in southeast Arizona are drying up quickly after greening up earlier than usual. For New Mexico as a whole, 61 percent of top soils are short or very short of moisture. The abnormally dry conditions prompted the expansion of D0 across the southern borders of both Arizona and New Mexico. In western Colorado, snowpack was generally above normal for the season and with an early and fast melt occurring, stream flows are generally much above average. However, the Yampa/White Basin was one of the only areas in the Upper Colorado River Basin that did not reach average peak snowpack. It was reported that not only is the snow melting early, but the crops are coming out of dormancy earlier than usual. Because of the warmer than normal temperatures, low elevation snow pack as disappeared much earlier than normal. Due to the above mentioned conditions, D0 was expanded to the north and west stretching across the Wyoming border. In California, Pacific storms continue to bring precipitation in the form of high elevation snow and valley rains to the region. These moisture laden storms are crucial for summer water resources as the runoff feeds into the streams and reservoirs. Forecasted stream flows for California river basins generally show much above normal volumes through the summer months. No other changes were made in the West.

    *For details on Eastern Colorado and Eastern Wyoming, refer to the High Plains region…

    Looking Ahead

    During the next 5 days, temperatures are forecasted to be near to below average for the Northwest, High Plains and South. Warmer than average temperatures are expected in the Mid-Atlantic, Southeast and Southwest. During the same period, precipitation is forecasted to be the heaviest (3-5 inches) in an area stretching from Oklahoma east through the Tennessee Valley. Much of the Midwest and Northeast is also expected to see about an inch of precipitation. The 6-10 day outlooks call for an increase in probability that above normal temperatures are expected in the Southwest and South stretching into the Midwest and below normal temperatures in the Northwest, Northeast and parts of the High Plains. The odds are in favor of wet conditions in the Northwest, Northern Rockies and High Plains while the West and East Coasts dry out.

    #Snowpack/#runoff news: Rafting outfitters optimistic

    Westwide SNOTEL basin-filled map April 19, 2017 via the NRCS.

    From TheDenverChannel.com (Marc Stewart):

    Rafting trips along the Arkansas River are getting a jump start this season, fueled in part by the heaps of mountain snow melting in the Colorado high country…

    Many areas along the Arkansas River are seeing strong white water, coming from the mountain terrain in Leadville, about 150 miles away. Because of the rich high country snow, you’ll likely see faster water and bigger rapids.

    Pueblo County Commissioners urge EPA to continue Fountain Creek lawsuit

    Fountain Creek erosion via The Pueblo Chieftain

    From The Pueblo Chieftain (Anthony A. Mestas):

    In response to a call from Sen. Doug Lamborn for the Environmental Protection Agency to withdraw its federal lawsuit against the city of Colorado Springs, the Pueblo County commissioners have drafted a letter to lawmakers against that action.

    On Wednesday, the commissioners agreed to send the letter to members of their federal congressional delegation.

    “We felt that it was imperative that we draft this letter to both the House and the Senate to reiterate just how important this lawsuit is to Pueblo County in protecting our interests pertaining to water quality,” Commissioner Garrison Ortiz said.

    Commissioner Sal Pace said lobbyists already are asking new EPA leadership to pull back on Fountain Creek and to not push forward with the federal lawsuit.

    “There’s been some evidence that the EPA is going to heed the call of some of these political forces in El Paso County and Colorado Springs,” Pace said.

    “We think it’s critically important to the county that the EPA stays strong in this matter and stands alongside the state health department, Pueblo County and the Lower Arkansas Valley Water Conservancy District.”


    Ortiz said budget cuts to the EPA by President Donald Trump may affect the current lawsuit.

    “That certainly played into the decision-making process whether to join in the litigation in the first place or not,” Ortiz said.

    The proposed cuts especially to the EPA and some other agencies are certainly concerning . . . All that we are continuing to ask for is a seat at the table ensuring that our interests are continuing to be protected.”