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The Bureau of Reclamation's Central Valley Project cost-allocation and water-ratesetting process, audited by the DOI Office of Inspector General

One Employee Calculates California's $1.3B Water Debt

Summary

A U.S. Department of the Interior Inspector General audit found the Bureau of Reclamation lets a single unreviewed employee calculate the cost allocations behind California's Central Valley Project water rates -- a $4.4 billion construction investment, $1.3 billion of it billed to irrigation and city water contractors -- while 75% of the 55 ratesetting schedules on BOR's own 2021 tracking spreadsheet had no documentation that anyone reviewed them at all.

By Frontinus · July 20, 2026
Narration is synthetic. Every number sourced.
In 30 seconds

The problem: the Central Valley Project carries $4.4 billion in construction cost, and federal law says water contractors repay their share by 2030. The approvals: the Bureau of Reclamation splits that cost and sets the water rate, $1.3 billion to water supply. Where it goes wrong: one Economist does the split, nobody checks, and 41 of 55 rate schedules show no review. How it's caught: a DOI Inspector General audit, 20 recommendations, one unresolved.

1. THE PROBLEMCENTRAL VALLEY PROJECTOne project, eight purposes20 dams, 11 power plants, 500 miles ofcanals; a third of…FEDERAL LAWWater users must repay theirshare by 2030The Coordinated Operations Act of 1986turns the cost split into a legal debt2. THE APPROVALSBUREAU OF RECLAMATIONBOR allocates the cost everyyear$4.4B construction and $135M O&Macross eight purposes; $1.3B and…BOR RATESETTING TEAM55 schedules turn theallocation into the water rateGuided by 27 SOPs; more than 200contractors pay what the schedules sayCVP AREA OFFICESArea offices spend money thatfeeds the cost base2,392 purchase-card transactions($2.4M) and 126 contracts ($25M)…3. WHERE IT GOES WRONGONE ECONOMISTOne Economist, no reviewer, noprocedure87 construction worksheets plus 17 O&Mworksheets; 65 of 300 lines in one…BOR RATESETTING TEAMRequired schedule reviewleaves no record41 of 55 schedules on the 2021tracking sheet unreviewed; 1 of…CVP AREA OFFICESInputs arrive without therequired paperwork16 of 34 sampled purchases and 6 of 14sampled contracts lacked…4. HOW IT'S CAUGHTDOI INSPECTOR GENERALDOI OIG Report No.2022-WR-048, public…20 recommendations; BOR and theDepartment concurred or…BUREAU OF RECLAMATIONFixes promised, one still openAllocation review and SOPs due March31, 2025; Recommendation 18…OPEN QUESTIONNobody has recomputed thesplit itselfThe audit tested the controls, not the$1.3B answer; whether the water…cost must be splitdebt becomes a ratedone by one personreview not recordedpaperwork missingfound by auditRec. 18 pendingstill unchecked
In 2 minutes

The problem ·The Central Valley Project is federal plumbing: 20 dams and reservoirs, 11 power plants, 500 miles of canals, water for a third of California's farmland and a million households. Built for eight purposes, its cost must be divided before anyone can bill the water. The Coordinated Operations Act of 1986 makes that division a debt: irrigation and city contractors repay the water-supply share of construction by 2030.

The approvals ·The Bureau of Reclamation does the dividing: about $4.4 billion in construction cost and $135 million in O&M, allocated across eight purposes each year; water supply's share is $1.3 billion and $54 million. A ratesetting team turns that into per-acre-foot rates through 55 schedules guided by 27 procedures, and more than 200 contractors pay the result. Into the cost base flow the area offices' own purchases: 2,392 card transactions and 126 contracts in fiscal 2022.

Where it goes wrong ·The allocation is one Economist's spreadsheet, 87 construction worksheets and 17 for O&M, unreviewed by any manager or peer. No written procedure exists; the manager cited a vacant junior-economist position. In one worksheet the Economist flagged 65 of 300 lines with unanswered questions about a predecessor's reasoning. Downstream, BOR's rules require review of every rate schedule, but 41 of 55 on the 2021 tracking sheet had no record of it, and only 1 of 27 procedures had been updated since 2010. Upstream, 16 of 34 sampled purchases and 6 of 14 sampled contracts lacked required paperwork or approval.

How it's caught ·The Department of the Interior's Inspector General found this in Report No. 2022-WR-048, public in August 2024. It issued 20 recommendations; BOR and the Department concurred or conditionally concurred with 19. The cost-allocation and procedure fixes carry a March 31, 2025 target; Recommendation 18, routine sampling of card purchases, was still unresolved. The audit did not recompute the allocation: nobody has checked whether the $1.3 billion split is right.

Verdict: the rate is not shown wrong, only unchecked, by a system whose review steps exist on paper and nowhere else.

Every year, the Bureau of Reclamation sorts the cost of one of the largest water systems in the country -- 20 dams and reservoirs, 11 power plants, 500 miles of canals, water for a third of California's farmland and a million households⧉ -- into the rate that more than 200 irrigation and municipal contractors pay. One person does the sorting⧉: a single Economist, working alone, with no manager or peer checking the arithmetic behind the roughly $1.3 billion in water-supply construction debt contractors are repaying -- just $7.8 million of it still owed, due in full by 2030⧉. A DOI Inspector General audit, Report No. 2022-WR-048⧉, found that arithmetic has never been reviewed.

One ledger, 87 tabs, no second signature

The Economist inherited that memory imperfectly. In a single O&M worksheet, auditors found 65 of 300 line items flagged with the Economist's own open questions about a predecessor's allocation rationale⧉ -- for instance, a "Folsom Public Safety, Protection of Land" line the predecessor had marked nonreimbursable for reasons the current Economist could not reconstruct. No process existed to resolve those questions; the spreadsheets' internal formulas confirm that numbers add up, not that the decisions behind them are correct⧉. Asked why no one reviewed the work, the Economist's manager cited a vacant junior-economist position and said he would start reviewing the calculations himself in the meantime.

Water-supply construction debt
$1.3B
Of $4.4B total CVP construction cost -- $7.8M still owed, due by 2030
Annual O&M billed to contractors
$54M
40% of the $135M BOR allocates annually for CVP operations and maintenance
2021 rate schedules unreviewed
75%
41 of 55 schedules -- no peer or supervisor sign-off on file
Where Reclamation's Internal Checks Failed
Share of sampled or reviewed items lacking required documentation or review, Central Valley Project cost-allocation and acquisition processes
2021 ratesetting schedules with no documented review
75%
Sampled FY2022 micropurchases with documentation gaps
47%
Sampled FY2022 contract awards missing required approval
43%
Source: DOI Office of Inspector General, Report No. 2022-WR-048 (August 2024)
View data as table
None of these processes were unaudited by accident -- all three feed directly into the water rate charged to CVP contractors.
2021 ratesetting schedules with no documented review75%41 of 55 schedules on BOR's own review-tracking spreadsheet
Sampled FY2022 micropurchases with documentation gaps47%16 of 34 transactions tested
Sampled FY2022 contract awards missing required approval43%6 of 14 contracts tested

The rate schedules nobody signs off on

Once costs are allocated, a separate ratesetting team turns them into the actual per-acre-foot water rate contractors pay, using 55 schedules guided by 27 standard operating procedures⧉. BOR's own rules require a peer, then a supervisor, to review every schedule. When the asked for the review records, BOR could produce complete documentation only for 2021 and part of 2019 -- and of the 55 schedules listed on the 2021 tracking spreadsheet, 41 of them, 75 percent, had no record that anyone had reviewed them⧉.

The procedures meant to guide the schedules have aged out with the staff who wrote them: only 1 of the 27 ratesetting SOPs had been updated since 2010, and two of the 55 schedules had no SOP at all⧉; auditors found stale formulas referenced in four of six SOPs they tested. A newer accountant on the team told auditors the group runs on the knowledge of just two or three people, one of whom is retiring.

Smaller leaks in the same system

Twenty fixes, mostly promised, one still open

BOR and the Department's acquisition office concurred or conditionally concurred with 19 of the OIG's 20 recommendations⧉ -- independent review of the cost allocations, written SOPs, updated ratesetting procedures, packing-slip documentation, an end to storing card numbers at stores, and requisition forms at every area office. The one holdout was Recommendation 14 itself: BOR did not concur that its South-Central store was keeping card numbers on file, but the OIG kept the recommendation resolved anyway, citing store managers' and BOR's own purchase-card coordinator's independent confirmation that it was happening⧉. Per the report's own status table, 16 recommendations were later marked Resolved and 3 more Implemented⧉ -- most on 2024 target dates, with only the cost-allocation and SOP fixes (Recommendations 1-7) carrying a March 2025 deadline.

One was not: Recommendation 18, requiring BOR to routinely sample micropurchase transactions at all three area offices to catch documentation problems before an outside audit finds them, remained marked Unresolved⧉, with the noting only that it would meet with BOR to discuss it further -- the routine check that would have caught this audit's own findings sooner is the one fix still pending.

  • One BOR Economist manually builds the CVP's entire annual cost-allocation calculation -- construction and O&M spreadsheets spanning roughly 104 worksheets -- with no manager or peer review; that calculation apportions about $1.3 billion in water-supply construction debt and $54 million in annual O&M costs to more than 200 irrigation and municipal contractors.
  • Of the 55 ratesetting schedules that set the actual water rate, 41 (75%) had no documented peer or supervisor review on BOR's own 2021 tracking spreadsheet, and only 1 of 27 guiding SOPs had been updated since 2010.
  • Sampled purchase-card and contract-award transactions from FY2022 showed comparable gaps: 47% of tested micropurchases had documentation deficiencies, and 43% of tested contract awards lacked evidence of required approval before the money moved.
  • BOR and the Department concurred or conditionally concurred with 19 of the 's 20 recommendations -- BOR did not concur with discontinuing purchase-card storage at a local store, though the deemed it resolved anyway -- and most were later marked Resolved or Implemented, mainly on 2024 target dates. The recommendation requiring routine sampling of micropurchase transactions -- the ongoing check most likely to catch the next version of these problems -- remained Unresolved as of the report's status table.

All figures trace to the DOI Office of Inspector General's Report No. 2022-WR-048, "Stronger Controls Needed Over the Bureau of Reclamation's Central Valley Project Cost Allocation and Ratesetting Processes" (public version, August 2024). This piece independently computed the water-supply purpose's roughly 29.5% share of the CVP's $4.4 billion total construction allocation, the roughly 0.6% of the $1.3 billion construction debt still unpaid, the water-supply purpose's 40% share of average annual O&M costs, the 47.1% and 42.9% sample-deficiency rates for micropurchases and contract awards, the 74.5% ratesetting-schedule review gap, the 3.7% SOP-currency rate, and the combined roughly $27.4 million in FY2022 micropurchase and contract-award spending -- all directly from the report's own stated totals and sample results.

Sources(2) ▾
  • Office of Inspector General, U.S. Department of the Interior, Stronger Controls Needed Over the Bureau of Reclamation's Central Valley Project Cost Allocation and Ratesetting Processes (Report No. 2022-WR-048) (2024-08-01) — The DOI 's public final audit report -- primary source for every figure and finding in this piece: the CVP's scale, contractor count, and construction/repayment history (Background, p.3-4), the 2020-2022 average annual cost-allocation totals and the water-supply construction and O&M shares (Why This Matters, p.2, and Cost Allocation and Ratesetting Processes, p.7), the single-Economist cost-allocation process and the absence of any management or peer review (p.10-12), the ratesetting-schedule and SOP counts and the finding that only 1 of 27 SOPs had been updated since 2010 (p.13-15), the FY2022 micropurchase population and sample-testing results including the questioned duplicate payment and unsafeguarded purchase-card information (p.16-20), the FY2022 contract-award population and sample-testing results (p.20-23), all 20 recommendations (Recommendations Summary, p.23), and the Appendix 4 status table showing each recommendation's resolution status as of the report's publication (p.57-59). doioig.gov · original document
  • Office of Inspector General, U.S. Department of the Interior, DOI OIG Hotline -- Report Fraud, Waste, Abuse, and Mismanagement (2026-07-20) — The 's own hotline page -- source for the reporting channels, mailing address, and coverage scope used in this piece's call-to-action; the toll-free hotline number is also printed on the back cover of the audit report itself. doioig.gov · original document
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