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PeerBasis
Compensation Comparability Determination

Southeastern Arizona Bird Observatory Inc

Executive Director / CEO

EIN 860842671
AZ · NTEE C320
FY ending 2024-12-31
June 9, 2026

This analysis benchmarks the total compensation of Sheri Williamson, Executive Director / CEO ($23,750) against every comparable organization that fit the selection criteria — 97 in total — drawn systematically from IRS Form 990 filings, not a hand-picked subset.

Compensation sits at approximately the 8th percentile of comparable organizationsbelow the typical range for comparable organizations

Benchmarked executive: Sheri Williamson — reported title “President”, a direct title match to the Executive Director / CEO role.

How comparable organizations were selected

97 organizations qualified on sector, size, and geography 97 within the band form the benchmarked peer set.

Distribution of comparable compensation

$6,285 total compensation of comparable organizations → $158,932 $23,750
$45,60510th
$60,10225th
$78,471Median
$92,98275th
$112,20690th
$23,750This org · 8th
p10$45,605
p25$60,102
p50$78,471
p75$92,982
p90$112,206
$23,750

Comparable organizations

Each figure is Form 990 Part VII columns D + F (reportable pay plus other compensation and benefits; column F may include amounts from related organizations), normalized to AZ cost of living (BEA RPP, 2023) and to its filing year (CPI-U); the reported amount is on each linked 990.

OrganizationStateRevenueMatched titleComp
(reported)
Comp
(adjusted)
FY
Crystal Springs Foundation Inc FL$427,082 Vp/executive Director $86,565 $87,055 2023
The Center For Water Security And DC$426,670 Vice-chair And Executive Director $138,333 $129,951 2023
Ohio River Foundation OH$425,997 Executive Director $135,609 $149,347 2024
Doan Brook Watershed Partnership OH$422,092 Executive Di $51,606 $56,834 2024
Dolores River Boating Advocates CO$434,872 Executive Director $90,444 $90,176 2024
Khm International HI$435,307 Exec Director $74,675 $69,518 2024
River Rangers International Inc OH$420,310 President/ce $75,000 $82,598 2024
Save The River Inc NY$419,357 Exec. Direc. $47,807 $44,919 2024
Multicultural Education For Resource CA$413,304 Exec. Director $94,250 $87,124 2023
Great River Passage Conservancy MN$444,881 Executive Director $154,688 $158,932 2024
Higgins Lake Foundation MI$410,917 Executive Di $7,989 $8,574 2024
National Watershed Coalition OK$446,831 Executive Director $132,000 $147,240 2025
Plant A Million Corals Foundation Inc FL$406,319 President & Ceo $82,214 $80,308 2024
Mills River Partnership Inc NC$406,242 Executive Di $84,253 $88,187 2025
Friends Of The Mad River VT$406,162 Executive Director $68,571 $71,765 2024
Colorado Watershed Assembly CO$453,242 Executive Director $72,000 $73,908 2023
Middle Colorado Watershed Council CO$454,149 Executive Director $93,526 $96,004 2023
Luckiamute Watershed Council OR$458,859 Exec Directo $28,333 $27,359 2024
Haw River Assembly Inc NC$397,564 Executive Di $71,611 $76,938 2024
Savannah Riverkeeper Inc GA$461,387 Executive Di $53,880 $56,332 2024
Arkansas River Watershed Collaborative CO$467,784 Executive Director $84,464 $84,214 2024
Calapooia Watershed Council OR$470,356 Executive Dir. $82,683 $79,840 2024
Lifewater Inc AR$474,680 President/ceo $65,583 $76,653 2024
Lake Waramaug Task Force Inc CT$476,333 Executive Director $91,115 $91,454 2023
Atchafalaya Basinkeeper Inc LA$477,796 Executive Director $71,560 $81,933 2024

Comp (reported) is the figure on each organization's Form 990 (columns D + F); Comp (adjusted) normalizes it to AZ cost of living and 2024 dollars. Click any organization to verify the figure on ProPublica.

Methodology

Comparable organizations were drawn from electronically filed IRS Form 990 returns and matched on sector (NTEE code), budget (a size-adaptive revenue band that tightens as the organization grows), and geography (same-state first, broadening only when too few peers qualify); every organization within the band forms the peer set. To compare fairly across regions and years, peer compensation is normalized to AZ cost of living (BEA Regional Price Parities, 2023) and to the subject's filing year (CPI-U). The figure benchmarked is Form 990 Part VII, Section A, columns D + F — reportable pay plus other compensation, benefits, and deferred amounts (column F may include amounts from related organizations) — with the chief executive matched by role. Related-organization amounts (column E) and institutional trustees are excluded. Full methodology: peerbasis.org/methodology.

Sample, role match & sensitivity

Sensitivity — the subject's percentile under alternative compensation definitions:

BasisSubject percentile
Total compensation (D + F), cost-of-living + inflation adjusted — the PeerBasis default8th
Total compensation (D + F), as reported (no adjustments)8th
Reportable pay only (column D), adjusted8th
All sources (D + E + F), adjusted7th

If the percentile moves materially across these definitions, the result is sensitive to methodology choices, and the board should weigh which basis best fits its facts.

Rebuttable presumption of reasonableness · 26 CFR 53.4958-6

Compensation paid by a tax-exempt organization is presumed reasonable — shifting the burden to the IRS — when three requirements are met. This report supplies the comparability data for the second. The board should record the following in its minutes concurrently with its decision:

Draft board minutes — executive compensation

  1. The compensation of the Executive Director / CEO (Sheri Williamson) was approved in advance by [the Board / Compensation Committee], composed of members with no conflict of interest with respect to the arrangement.
  2. Prior to its determination, the authorized body obtained and relied upon appropriate comparability data, namely the PeerBasis Compensation Comparability Determination dated June 9, 2026, comparing compensation against 97 similarly situated organizations (Same NTEE sector (C32), nationwide + budget 0.67–1.5× revenue).
  3. The authorized body determined that total compensation of $23,750 is reasonable (approximately the 8th percentile of comparable organizations) and documented the basis for this determination concurrently, on [date], by a vote of [__ for / __ against].

Sources: IRS Form 990 e-file data (apps.irs.gov); IRS Business Master File (NTEE classification). Every figure traces to an original public filing — click any organization above to verify it on ProPublica. PeerBasis is a service of Prismind Analytics; its methodology is published, was commissioned for independent adversarial review, and discloses its own limitations. This report is comparability data to support a board's good-faith determination under IRC 4958; it is not legal or tax advice. Generated by PeerBasis on June 9, 2026.