Images

Still-shot from webcam of sunset over Medina Lake near San Antonio, Texas, May 25, 2022. USGS Site: 08179500. Image from the Hydrologic Imagery Visualization and Information System (https://apps.usgs.gov/hivis/).

Participate in this national photo contest, #RecreateWithUSGS, for a chance to win the title of Water Recreation Photo Champion. More rules apply, see more details.

USGS deployed this buoy platform with connected water quality equipment in Southport Harbor, CT in May 2022.

USGS deployed this buoy platform with connected water quality equipment in Southport Harbor, CT in May 2022.

A thumbnail image of the Vizlab logo. It features the words and a drawing of a gage.

A cartogram map of the US with proportional area charts for each state showing the proportion of streamgages by flow level. Streamflow levels are shown as percentiles of the historic daily record at each gage, and binned to reflect whether flow conditions are wetter or drier than the historical record.

Here is the beautiful USGS gage 10317500, on the North Fork, of the Humbolt River near Halleck, Nevada, a bit Northwest from The East Humboldt Range and the Humboldt-Toiyabe National Forest. Water data back to 1913 are available online.  

Retaining wall at northeast corner of property. A view of the Hydrologic Instrumentation Facility (HIF) construction site, as of May 5, 2022.

Tow Tank foundation being formed at the Hydrologic Instrumentation Facility (HIF) Construction Site (05/05/22)

On April 25th, 2022, the Water Data for the Nation team hosted the 3rd webinar in our API series. This webinar focused on another OGC (Open Geospatial Consortium) API called Processes.

A radial legend for the timing and temperature vectors. North and South are "Warmer" and "colder", respectively. East and West are "earlier" and "later" respectively. The x-axis is based on the number of day difference in timing of growing degree days, and the.

Where is sediment coming from in North Carolina? Comparing sediment sources for HUC8 basins, data from doi.org/10.5066/P97MV16H.  A ridgeline plot shows major sediment courses in three ecoregions of NC: coastal plain, piedmont, and mountains. In the Coastal plain, stream channels and agriculture are the top sediment sources.

A map of USGS streamgages and population density shows the proximity of gages to people. In addition, a line chart is overlaid showing the total population within 3 distances from any gage in the US. These distances represent a normal walking distance, biking distance, and driving distance.

The way the river flows. A series of radial plots showing the river length by flow direction across select U.S. watersheds. Bar length is proportional to the relative river distance within 10 degree bins. An example of Puyallup in WA is shown which generally flows northwest, from its’ headwaters near Mt. Ranier towards Puget Sound.

When are U.S. rivers wet or dry? This circular area chart displays the total flow rate in million cubic feet per second throughout a year. Total flow is derived from 1,865 USGS NWIS gages with near complete data for 1951-2020.

  A Tale of Two Basins. This circular chart shows the Upper Colorado River basin and the Lower Colorado River basin side by side. The Upper Colorado basin chart shows that February 4 is the driest day of the year and June 8 is the wettest day of the year.

A map showing the locations of the Upper and Lower Colorado river basins in the contiguous U.S. and all 1,865 NWIS sites used to calculate total flow.

A time series of streamflow drought events occurring across 122 stream gages in the Upper Colorado River basin from 1980 to present. Periods of streamflow drought are indicated for each of 122 gages in a beeswarm-like chart, with time on the x-axis. During time periods where many gages experienced drought, the swarm bulges due to many co-occurring events.

A time series of streamflow drought events occurring across 122 stream gages in the Upper Colorado River basin for 2020 through October 1, 2021. At the beginning of 2020 few gages were in drought status, but as the 2020 summer proceeded there was a surge in drought conditions continuing through the end of 2021.

The rise and fall of the Delaware River salt front. Over time, the location of the salt front moves in response to regional weather patterns, sea level rise, and human impacts. The precise location of the salt front in the Delaware River Basin is based on the location in the river where the average chloride concentration is 250 mg/L.

A polar chart shows the daily fluctuation of the salt front from September 28 – October 28, 2019. On this timescale, the location of the salt front is influenced by tides. As a result, the chart displays an interwoven spiral pattern.