Lake Hickory
Lake level relative to full pond
98 ft (full pond = 100)· Duke Energy Lake View
Places & comparisons
Compare water conditions.
Start with a place.
Browse 19 place pages, state records, rivers and lakes. Each measure includes its own dates, sources and limitations.
and
Local water pages
Choose a place to learn about its drinking water, water sources and local conditions. The information available varies by location.
Water levels and storage
Explore reservoir measurements
Explore 531 official reservoir reporting records across the regions covered so far. Choose a location for dated readings and history. Dates, methods and agency coverage vary. Some agencies monitor the same reservoir; these records are not a count of unique lakes and must not be summed. Storage does not establish drinking-water safety or your home’s water supply.
Lake Powell Glen Canyon Dam and Powerplant
Daily instantaneous storage
5,136,840 acre-ft· US Bureau of Reclamation / RISE
Shasta Dam (Usbr)
Daily reported storage
2,477,120 acre-ft· California Department of Water Resources / CDEC
Oroville Dam
Daily reported storage
1,695,719 acre-ft· California Department of Water Resources / CDEC
Lake Travis
Water-surface elevation
675.09 ft· Texas Water Development Board
Lake Mead Hoover Dam and Powerplant
Daily instantaneous storage
6,835,190 acre-ft· US Bureau of Reclamation / RISE
River flow
Explore river-gauge histories
Explore daily flow readings and history at 8170 named USGS gauges across the regions covered so far. These are individual monitoring sites, not a complete inventory or a river-wide water-health score. Check the gauge location, date and source notes. Flow does not establish drinking-water safety or supply to a home.
4L C NR MARKLEEVILLE CA
Daily mean flow at the named gauge
0 ft³/s· US Geological Survey
A CANAL AT KLAMATH FALLS, OR
Daily mean flow at the named gauge
187 ft³/s· US Geological Survey
ABBOTTS CREEK AT LEXINGTON, NC
Daily mean flow at the named gauge
48.1 ft³/s· US Geological Survey
ABERJONA RIVER AT WINCHESTER, MA
Daily mean flow at the named gauge
5.52 ft³/s· US Geological Survey
ABRAM CREEK AT OAKMONT, WV
Daily mean flow at the named gauge
40.9 ft³/s· US Geological Survey
ACCOTINK CREEK AT KEENE MILL RD AT SPRINGFIELD, VA
Daily mean flow at the named gauge
9.83 ft³/s· US Geological Survey
River flow
Explore flow at a named river gauge
Each reading describes one monitoring site, with its own dates and history. It is not an average for the whole river or a water-safety result.
Catawba River
CATAWBA RIVER NEAR ROCK HILL, SC
943 ft³/sDaily mean · 2026-09-25
Explore this gauge’s readings and history →Chattahoochee River
CHATTAHOOCHEE RIVER AT ATLANTA, GA
1,140 ft³/sDaily mean · 2026-09-25
Explore this gauge’s readings and history →Colorado River
COLORADO RIVER NEAR GRAND CANYON, AZ
7,880 ft³/sDaily mean · 2026-09-25
Explore this gauge’s readings and history →Hillsborough River
HILLSBOROUGH RIVER NEAR TAMPA FL
147 ft³/sDaily mean · 2026-09-25
Explore this gauge’s readings and history →James River
JAMES RIVER NEAR RICHMOND, VA
1,560 ft³/sDaily mean · 2026-09-25
Explore this gauge’s readings and history →Lower Colorado River (Texas)
Colorado Rv at Austin, TX
754 ft³/sDaily mean · 2026-09-25
Explore this gauge’s readings and history →Neuse River
NEUSE RIVER NEAR CLAYTON, NC
244 ft³/sDaily mean · 2026-09-25
Explore this gauge’s readings and history →Rio Grande
RIO GRANDE AT ALBUQUERQUE, NM
191 ft³/sDaily mean · 2026-09-25
Explore this gauge’s readings and history →Curated comparisons
Compare places and water sources
Compare places using the same measurements and time periods. Check the dates and units beside each result.
PLACE
Charlotte, NC
and Hickory, NC
3 shared metrics clear the contractOpen comparison PLACE
Phoenix, AZ
and Las Vegas, NV
3 shared metrics clear the contractOpen comparison RESERVOIR
Lake Hickory
and Lake Mead
0 shared metrics clear the contractOpen comparison RIVER SITE
Henry Fork near Henry River gauge
and Irwin Creek near Charlotte gauge
1 shared metric clear the contractOpen comparison WATERSHED
Upper Catawba
and Lower Catawba
1 shared metric clear the contractOpen comparison What changed most?
Notable changes in the available measurements.
These changes meet the size and data-quality requirements described in our methods. A missing event may fall below those thresholds or lack enough measurements.
New York, NY
material historical change
2026-08-25Hickory, NC
material historical change
2026-08-11Chicago, IL
material historical change
2026-08-04Raleigh, NC
material historical change
2026-07-28Charlotte, NC
material historical change
2026-07-28Las Vegas, NV
material historical change
2026-05-19Phoenix, AZ
material historical change
2026-03-24Streamflow at 12 monitored places
Selected-gauge streamflow percentile
This compares the latest available stream-gauge readings at 12 places. It ranks this one measure, not water safety or the health of an entire river.
- 1Salt Lake City100th percentile
- 2Charlotte98.4th percentile
- 3Denver82.9th percentile
- 4Chicago56.6th percentile
- 5Phoenix54.3th percentile
Which places are included and how we compare them
- exclusions
- unavailable or methodology-pending streamflow; non-daily-mean observations
- freshness
- within 3 days of 2026-08-31
- methodology
- national_streamflow_selected_daily_mean_v1
- metric
- seasonal daily-mean percentile
- minimum quality
- HIGH; MEDIUM
- period
- latest complete daily mean, 2026-08-28
- source
- USGS Water Data
- ties
- competition ranking, stable entity ID order
- unit
- percentile
- universe
- 12 published proof places with current selected-gauge context
Browse by state
Explore water by state
58 water topics across 35 management regions. The topics listed show what information is available here, not how good the water is.
Texas5 available · 2 topics with limited informationArizona2 available · 4 topics with limited informationCalifornia2 available · 6 topics with limited informationVirginia3 available · 1 topics with limited informationFlorida1 available · 4 topics with limited informationColorado1 available · 4 topics with limited informationUtah2 available · 4 topics with limited informationGeorgia3 available · 3 topics with limited informationSouth Carolina2 available · 3 topics with limited informationNorth Carolina6 available · 0 topics with limited information
See which topics are available in each state
These labels show how much information we have added for each topic. They do not rate the state’s water.
| Family | TX | AZ | CA | VA | FL | CO | UT | GA | SC | NC |
|---|---|---|---|---|---|---|---|---|---|---|
| RESTRICTIONS | — | — | — | — | Partial | — | — | — | — | Available |
| SUPPLY | Available | Partial | Partial | — | Partial | Partial | Partial | Partial | Partial | Available |
| DEMAND | Available | Partial | Partial | — | — | — | — | Available | — | Available |
| FUTURE DEMAND | Available | — | Partial | — | — | — | — | Available | — | Available |
| WITHDRAWALS | — | — | — | Available | — | — | — | Partial | Partial | — |
| GROUNDWATER | Partial | Available | Available | Partial | Partial | — | Partial | — | Available | Available |
| RESERVOIRS | Partial | — | Partial | — | — | — | Partial | — | — | — |
| WATER PLANNING | Available | Available | Available | Available | Available | Available | Available | Available | Available | Available |
| WATER RIGHTS | — | Partial | — | — | Partial | Partial | — | — | — | — |
| SNOWPACK | — | — | Partial | — | — | Partial | Partial | — | — | — |
| IMPORTED WATER | — | Partial | Partial | — | — | Partial | — | Partial | — | — |
| WATER USE CATEGORIES | Available | — | — | Available | — | — | Available | — | Partial | — |
Water in smaller communities
Explore local providers, source water and dated drinking-water tests.