Water Supply Report Card

Viewing a historical report for October 28, 2025. Latest available report: October 24, 2026.

Indicator	Grade	Compared with history	Measurement	Share of grade	Ranked against
Upper Reservoir Storage Explore the U.S. Bureau of Reclamation data for Upper Reservoir Storage (opens in a new tab) What this measures Water held in the seven mountain reservoirs that capture Weber Basin runoff. Willard Bay is not included here because of where it sits in the basin.	C+	Slightly Better Than Average	168,876 of 336,190 acre-feet	25%	22 years (2003–2024)
Total Reservoir Storage Explore the U.S. Bureau of Reclamation data for Total Reservoir Storage (opens in a new tab) What this measures Every reservoir in the system, Willard Bay included. Because storage moves slowly, this is compared against a seven-day window around today rather than this calendar day alone.	C	Average	251,820 of 583,379 acre-feet, compared against a seven-day window around this date	20%	23 years (2003–2026)
Precipitation Explore the USDA NRCS data for Precipitation (opens in a new tab) What this measures Rain and melted snow recorded across the basin, added up since the water year began on 1 October. It restarts at zero each October, so early-season figures are always small.	A-	Very Good	4.6 inches, accumulated since the water year began on 1 October	20%	48 years (1978–2026)
Soil Moisture Explore the USDA NRCS data for Soil Moisture (opens in a new tab) What this measures How saturated basin soils are, as a percentage. Dry soils soak up spring runoff before it can reach a reservoir, so a wet autumn helps next year's supply.	A-	Very Good	60.5% saturation	15%	22 years (2004–2026)
Temperature Explore the USDA NRCS data for Temperature (opens in a new tab) What this measures The average temperature over the last 14 days. Warm spells raise water demand and evaporation, so cooler than normal earns a better grade.	B-	Cooler than usual	37.8 degrees F, 14-day rolling average	20%	22 years (2004–2026)

Report card history

Every day from October 24, 2025 to October 24, 2026 scored the same way, so you can see how the year has moved. The dashed line is where a perfectly ordinary year would sit. The ringed point is October 28, 2025, the date shown above.

Each indicator over the same year

Upper Reservoir Storage C+
Total Reservoir Storage C
Precipitation A-
Soil Moisture A-
Temperature B-

Best B on Oct 28, 2025
Lowest F on Aug 9, 2026

Reservoir levels

How full each Weber Basin reservoir was on October 28, 2025.

Pineview 58,956
Echo 29,941
Rockport 28,086
East Canyon 31,952
Lost Creek 12,544
Smith and Morehouse 4,582
Causey 2,813
Willard Bay 82,944
Empty 331,560
Usual for this date

Bigger tile, bigger reservoir. The colored part is the water in it now.
Usual level for this date
About usual or above
Below usual (60 to 90% of usual)
Well below usual (under 60% of usual)

Whole basin: 251,819 of 583,379 acre-feet stored, 43% full. Usual for October 28 is about 304,039, 52%.

Pineview 54% full

58,956 of 110,150 acre-feet

3 points above the usual 50% full
Echo 40% full

29,941 of 74,000 acre-feet

2 points above the usual 39% full
Rockport 45% full

28,086 of 62,120 acre-feet

20 points below the usual 65% full
East Canyon 62% full

31,952 of 51,200 acre-feet

3 points above the usual 59% full
Lost Creek 56% full

12,544 of 22,500 acre-feet

6 points below the usual 62% full
Smith and Morehouse 55% full

4,582 of 8,350 acre-feet

About typical for this date (56% full)
Causey 36% full

2,813 of 7,870 acre-feet

3 points above the usual 33% full
Willard Bay 34% full

82,944 of 247,189 acre-feet

18 points below the usual 52% full

Each reservoir keeps its own color, in the same order, in the whole-basin bar, its legend and its own bar below. Bigger reservoirs get longer bars, so the same percentage of a large reservoir and a small one never look alike. The marker on each bar is the median level this reservoir held on this calendar date across every year on record, and the figure beneath each bar is how many percentage points the level sits above or below that marker. Willard Bay is listed separately because of its location in the basin, which is why it is not included in the Upper Reservoir Storage totals. Each reservoir name links to its Bureau of Reclamation data page.

How this is calculated

Each indicator compares Weber Basin conditions on the report date with every other year on record for the same point in the year, then turns that ranking into a letter grade, the way a school report card would: an ordinary year earns a C, the best years on record earn an A, and the driest earn an F. Temperature is graded so that cooler than normal earns a better grade, because warm weather increases water demand and evaporation.

The overall grade is a weighted blend of the indicators. Weights change by season, so snowpack matters most in winter and spring, and the two reservoir measures together carry the most weight in summer and fall. Snowpack does not count from June through November, when there is little or no snow on the ground to measure. Indicators without data for a date are left out and the remaining weights are rebalanced.

Share of the overall grade by season
Indicator	Fall RechargeOct–Nov (now)	Snow AccumulationDec–Mar	Spring RunoffApr–May	Summer DrawdownJun–Sep
Upper Reservoir Storage	25%	15%	20%	25%
Total Reservoir Storage	20%	15%	10%	20%
Precipitation	20%	10%	10%	20%
Snow Water Equivalent	0%	35%	30%	0%
Soil Moisture	15%	10%	15%	5%
Temperature	20%	15%	15%	30%

Snow Accumulation: the snowpack is next summer's water supply, so it carries the most weight.
Spring Runoff: melting snow refills the reservoirs, so snowpack and storage share the lead.
Summer Drawdown: there is no snow left to measure, so storage and heat, which drives demand and evaporation, carry the grade.
Fall Recharge: storage carries over into the new water year, while precipitation and soil moisture set up next spring's runoff.

Sources: U.S. Bureau of Reclamation reservoir data and USDA NRCS Weber-Ogden basin data. Each indicator in the table links to its own source page.