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Compensation 990 is an independent service that uses public IRS Form 990 filings as its source data. We clean and standardize this information, but the original filings may contain errors or omissions. Years on this site refer to the organization’s fiscal year end date on the filing.

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Employees Hydrologic Research Center Jason Sperfslage

Jason Sperfslage

OfficerTrustee/director

Treasurer at Hydrologic Research Center

Fiscal year ended September 30, 2024. Published on January 25, 2026.

$213,519

2024

Total compensation

Jason Sperfslage has been listed as an employee of Hydrologic Research Center in Form 990 filings since at least fiscal year 2016. Total compensation for Jason Sperfslage has increased by 70% from 2016 to 2024.

Annual compensation details

$213,519

＋30%

Treasurer

2024

$199k org

40 hrs/wk

$16k other

--

$164,220

＋6.2%

Treasurer

2023

$151k org

40 hrs/wk

$14k other

--

Total compensation by year

Compare the compensation of Jason Sperfslage to:

2024

Other employees at Hydrologic Research Center

Dr Konstantine Georgakakos

$245,229 from orgNo related comp$1,433 other

Dr Olufemi Osidele

Chief Executive Officer

$209,299 from orgNo related comp$19,844 other

$152,229 from orgNo related comp$32,783 other

Christopher Spencer

Computer Programme

$156,208 from orgNo related comp$10,917 other

Dr Theresa Modrick Hansen

$157,881 from orgNo related comp$8,176 other

Rochelle Campbell

$114,522 from orgNo related comp$14,373 other

Administrative ASS

$125,020 from orgNo related comp$3,792 other

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Revisions to this profile

January 25, 2026:

2024 Hydrologic Research Center 990 published

January 25, 2026:

2023 Hydrologic Research Center 990 published

January 25, 2026:

2022 Hydrologic Research Center 990 published

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$154,691

＋3.3%

Treasurer

2022

$143k org

40 hrs/wk

$13k other

--

$149,784

＋3.6%

Treasurer

2021

$138k org

40 hrs/wk

$12k other

--

$144,520

－5.3%

Treasurer

2020

$133k org

40 hrs/wk

$12k other

--

$152,555

＋12.4%

Treasurer

2019

$142k org

40 hrs/wk

$12k other

--

$135,779

＋3.9%

Treasurer

2018

$125k org

40 hrs/wk

$12k other

--

$130,647

＋4%

Treasurer

2017

$121k org

40 hrs/wk

$11k other

--

$125,614

Treasurer

2016

$116k org

40 hrs/wk

$11k other

--