FMA BOARD AGENCY REPORT NOAA/NWS Alan Haynes, Hydrologist in Charge, California Nevada River Forecast Center December 1st, 2021
New Interactive Short Range Ensemble Graphic
New Forecast Points Added to CNRFC Interactive Map
The CNRFC has gone live with a new interactive short range streamflow graphic on their webpage for all Hydrologic Ensemble Forecast Service (HEFS) locations. This new graphic replaces old static graphics and includes much more capability. A brief YouTube video is available explaining how it works: https://youtu.be/D0lgT5ZP9T8.
The CNRFC added a few forecast locations this year, accessible as “Other Points” from the CNRFC webpage. These forecast locations and their associated IDs are listed in tabular form in Figure 2 below.
A contrived image representing the look and feel of these new graphics for a forecast point on the West Walker River is presented below in Fig. 1 for illustration purposes. Watch the video linked above for more information on how to interpret these plots.
Location ID Description SPYC1
Pilot Creek - upstream of Stumpy Meadows
TRNC1
Trinity River - abv NF Trinity River nr Helena
RROC1
Russian River below Guernville (GUEC1) down to Hwy 1 bridge
HODC1
San Dieguito River - Hodges Dam
BTJC1
Big Tujunga Cr – Big Tujunga Reservoir
BRTC1
Pine Valley and Cottonwood Cr Conflu. - Barrett Lake
SUDC1
Santa Ysabel Cr - Sutherland Reservoir
HANC1
Big Tujunga Cr – Hansen Dam
Figure 2 – List of forecast points added this year including location ID and a brief description.
Yuba-Feather
Figure 1 – Fictional 5-day probabilistic plot of the hydrograph for the West Walker River – Highway 395 Below Little Walker.
FMA NEWS
This is the newest FIRO project, and a work plan is in place to help develop a Preliminary Viability Assessment. There are eight work teams tackling this FIRO project: 1) Water Resources Engineering Team, 2) Verification Team, 3) Observations Team, 4) Meteorology Team, 5) Hydrology Team, 6) Communications Team, 7) Economics Benefit Team, and 8) Decision Support Team. Efforts are also underway to update the Water Control Manuals (WCMs) for Oroville and New Bullards Bar reservoirs, scheduled to complete in FY2024. The Sacramento District of the USACE will receive $22.5 million to update various WCMs.
