CNRFC - Interactive Map Interface

*** IMPORTANT *** Week of June 16 - Website Data Outage - Due to a major computer upgrade the week of June 16, nearly all data on the CNRFC web site will not be updated. We anticipate the down time to be approximately 4 days. The latest deterministic hydrologic forecasts for official forecast points will continue to be available at the National Water Prediction Service during this time.

CNRFC Interactive Map Interface

Geographic Overlays	CNRFC Boundary		States	Counties	Burn Areas 2025 2024 2023
Geographic Overlays	Hydrography	Basins	Lakes	Major Rivers	WFOs	Tribal	Nat'l Parks

Point
Data
Filters

Elevation Filter: to ft

Invert
Filter

Temp. Change Filter: to °F

Topography	Topography/USGS	ESRI Topography	Shaded Relief	Imagery
Nat'l Geographic	Topo/Rivers	Topo/Hydro	Light Gray	Federal Lands

Legend for federal lands background layer.

Forecast (large dots):

The number inside each circle above represents the number of gages with observed conditions inside that category.

The number inside each circle above represents the number of gages with forecast conditions inside that category.

The number inside each circle above/below represents the number of gages with conditions inside that category.

Observed (small dots):

The number inside each circle above represents the number of gages with observed conditions inside that category.

The number inside each circle above represents the number of gages with forecast conditions inside that category.

The number inside each circle above/below represents the number of gages with conditions inside that category.

Download Overlay Files	Download Overlay Shapefiles

Rivers/Reservoirs

Deterministic 5-Day Forecasts

Show only critical stages (fcst pts only)

Data updated:

Forecast Points

Other Points

Ensemble Forecasts
Data updated:

Ensemble Points

Peak Exceedance Probabilities*
Data updated:

	10%	25%	50%	75%	90%
5-Day Peak
10-Day Peak

*Exceedance probabilities are only available for selected forecast points.

Observed Data
Data updated:

Show only critical stages (applies to fcst pts only)

	Latest Hour	1 Hr Ago	2 Hrs Ago	3 Hrs Ago
Forecast Points
Other Points
Reservoirs

Deterministic Forecast + Observed Data
Fcst data updated:
Obs data updated:

Forecast Points Show only critical stages
Link to observed forecast
Latest Hour	1 Hr Ago	2 Hrs Ago	3 Hrs Ago

Significant River Flood Outlook
Data updated:
Valid:

Latest Flood Outlook Product (updated daily)

National Significant River Flood Outlook

Water Resources

Data updated (unless otherwise noted):

Statistic for % normal:MeanMedian

Observed Water Year Flow To Date (WY2025)

Previous Seasonal Flow for WY:

Previous Water Year Flow for WY:

Forecast Water Supply Seasonal Volume

Forecast Water Year Volume

Observed Seasonal Date of Peak Flow / Inflow

Forecast Seasonal Date of Peak Flow / Inflow

Full Seasonal Date of Peak Flow / Inflow

Monthly Archive
Month/Year:

Statistic for % normal:MeanMedian

Monthly Accumulated Flow (Data to Apr 2011)

Reservoir Storage
(Data to 1925 for all reservoirs/1951 for "major")

% Normal		% Capacity
Major	All	Major	All

HEFS Verification Product Help
Select forecast date:

Historical HEFS Verification for WY

Historical HEFS Verification for AJ

Snow Data

Point Data
Data updated:

Current Day SWE % of Average

Current Day SWE % of Apr 1 Average

Current Day SWE % of Median

Current Day SWE % of Apr 1 Median

Data updated:

Daily Archive (Data back to Apr 2014)
M/D/Y:

	Basin Elevation Zones	% Avg	% Apr 1 Avg	Value
Simulated Basin Avg	Middle/Upper
	Lower/Only
	All Zones

Monthly Archive (Data back to Jan 1998)
Month/Year:

	% Avg	Value
Point*

* Jan-Jun only prior to 2019.

Observed Precipitation (QPE)

Short-Range Point Data

Values

Dots

Raw data updated:
QC data updated:

6-Hour Totals (QC'd = Quality-Controlled)
Ending 18Z (11 AM PDT)	Ending 00Z (5 PM PDT)	Ending 06Z (11 PM PDT)	Ending 12Z (5 AM PDT)
Raw	Raw	Raw	Raw
QC'd	QC'd	QC'd	QC'd

24-Hour Totals (QC'd = Quality-Controlled)

Raw - Ending 12 UTC (5 AM PDT)

QC'd - Ending 12 UTC (5 AM PDT)

Short-Range Gridded Data
Images created:

6-Hour

24-Hour

48-Hour

72-Hour

7-Day

Monthly/Water Year Archive (starts Oct 1996)
Month/Year:

What is a Water Year?

		% Avg	Value	Departure	Avg
Point	Month
Point	WY
Grid	Month
Grid	WY
Basin Avg	Month
Basin Avg	WY
HUC8 Avg	Month
HUC8 Avg	WY
Forecast Group	WY

Forecast Precipitation (QPF)

CNRFC Forecast Data
Forecast issued:

6-Hourly Gridded QPF

Animate

Select forecast time:

24-Hourly Gridded QPF

Animate

Select forecast time:

72-Hourly Gridded QPF

6-Day Gridded QPF

Observed Temperatures

Point Data
Data updated:

Instantaneous Temperatures

Latest Hr	1 Hr Ago	2 Hrs Ago
3 Hrs Ago	4 Hrs Ago	5 Hrs Ago

Temp Change:

Past Hour

Past 24 Hours

Max/Min Temperatures

24-Hour Max Ending 12Z (5 AM PDT)	24-Hour Min Ending 12Z (5 AM PDT)	Daytime Max *	Overnight Min **

* Updated: 10 PM **Updated: 10 AM

Gridded Data
Images created:

Instantaneous Temps

Animate

Select obs time:


Max T	Departure	24hr Chg	Normal


Min T	Departure	24hr Chg	Normal

Forecast Temperatures

Basin Temperature Plots
Images created:

Basin Obs/Fcst Temperature Plots

Forecast Temperature Grids
Images created:

Max T

Departure

24hr Chg

Normal

Animate


Min T	Departure	24hr Chg	Normal

Animate

Freezing Levels

Observed Freezing Levels
Images created:

Instantaneous FzLevel

Animate

Select forecast time:

Forecast Freezing Levels
Forecast issued:

Instantaneous FzLevel

Animate

Select forecast time:

Flash Flood Guidance/Debris Flow

Flash Flood Guidance Grids
Images created:

1-hour	3-hour	6-hour
Note: Recent burn areas are typically more vulnerable to flash flooding and debris flows. Check with your local NWS Forecast Office for fire specific guidance.

Post-Wildfire Debris-Flow Basin Probability

Debris Flow Probability (peak 15-min rainfall intensity of 24 mm/hr)

2024 Fires

2023 Fires

2022 Fires

More info: USGS post-wildfire debris-flow hazards

Water Temperatures

Climate/Drought

U.S. Drought Monitor

U.S. Drought Monitor (Current and Archive)

Select issuance date range:

From: To:

Climate Prediction Center Outlooks
Drought Outlooks

Monthly

Seasonal

Extended Range Outlooks

Precipitation	6-10 Days	8-14 Days
Temperatures	6-10 Days	8-14 Days

Long Lead Outlook

QPF Verification

Watches/Warnings/Advisories

Disclaimer

The selected data is currently not available. Please check again later.

The "Download PNG" feature is not available in this browser. Please try a different browser.

Load a point data set to view data.

Note:	Please select a data type above to activate KML download section.
Feedback / Comments:	Email the CNRFC Webmaster with your feedback and comments.

NWS RSS Feed

Note 1 About Product:	This product contains provisional data from automated gages and has not been screened or verified for accuracy.
Note 2 About Product:	Some river and reservoir gages may be hidden at zoomed out levels of the map due to a large amount of data being represented. Zoom closer to view all relevant data in specific area of interest.
Note 3 About Product:	The location of the river or reservoir gage is represented by the bottom-left corner of the icon.

Alternate Text Product:	CNRFC River Stage Summary - [Alternate Link]
Feedback / Comments:	Email the CNRFC Webmaster with your feedback and comments.

Note 1 About Product:	This product is updated daily with current water year forecasts plotted.
Note 2 About Product:	Most recent Official or Raw ESP Water Supply Forecast during the current water year is plotted.

Alternate Text Products:	Official Water Supply Text Forecast \| ESP Water Supply Seasonal Forecast \| ESP Water Year Forecast \| Observed and Forecast Peaks Current and Archived Point Data Data Type and Duration: Month/Year: Current and Archived Area Data Data Type and Duration: Month/Year:
Feedback / Comments:	Email the CNRFC Webmaster with your feedback and comments.

Note 1 About Product:	This product contains provisional data from automated gages and has not been screened or verified for accuracy.
Note 2 About Product:	Some snow water equivalent gages may be hidden at zoomed out levels of the map due to a large amount of data being represented. Zoom closer to view all relevant data in specific area of interest.

Alternate Text Product:	CNRFC Snow Water Equivalent Summary \| CNRFC Snow Depth Summary
Feedback / Comments:	Email the CNRFC Webmaster with your feedback and comments.

Note 1 About Product:	This product contains provisional data from automated gages and has not been screened or verified for accuracy.
Note 2 About Product:	Some precipitation gages may be hidden at zoomed out levels of the map due to a large amount of data being represented. Zoom closer to view all relevant data in specific area of interest.

Alternate Text Product:	CNRFC Precipitation Summary - [Alternate Link]
Feedback / Comments:	Email the CNRFC Webmaster with your feedback and comments.

Note 1 About Product:	This product contains provisional data from automated gages and has not been screened or verified for accuracy.
Note 2 About Product:	Some temperature gages may be hidden at zoomed out levels of the map due to a large amount of data being represented. Zoom closer to view all relevant data in specific area of interest.

Alternate Text Product:	CNRFC Temperature Summary \| Point Temperature Forecasts
Feedback / Comments:	Email the CNRFC Webmaster with your feedback and comments.

Alternate Text Products:	Basin QPF Days 1-3 \| Basin QPF Days 4-6 \| Point QPF Days 1-3 \| Point QPF Days 4-6
Feedback / Comments:	Email the CNRFC Webmaster with your feedback and comments.

Alternate Text Products:	US Drought Monitor Data \| CPC 6-10 Day and 8-14 Outlook Discussion \| CPC Long-Lead Seasonal Outlook Discussion
Feedback / Comments:	Email the CNRFC Webmaster with your feedback and comments.