---
type: "Bill"
title: "Oklahoma Conservation Commission; creating the Spring Creek Watershed Study Act; effective date."
description: "Oklahoma Conservation Commission; creating the Spring Creek Watershed Study Act; effective date."
jurisdiction: "us/states/ok"
legislature: "Oklahoma Legislature"
session: "2026"
identifier: "HB 1588"
citation: "Oklahoma HB 1588 (2026)"
classification: ["bill"]
subjects: []
status: "enacted"
primary_sponsors: ["Hardin", "Woods"]
version_count: 6
action_count: 32
vote_count: 7
first_action: "2025-02-03"
last_action: "2025-05-12"
source: "openstates"
source_identifier: "ocd-bill/22ff3fe9-899f-4af9-aa2c-51a08a73a594"
source_url: "http://www.oklegislature.gov/BillInfo.aspx?Bill=HB1588&session=2600"
source_hash: "7dbe644092528f5abe7e23d98890608cd6eb01b4fb764ae0a08b9555b7c41ae7"
vintage: "2026-07-01"
source_snapshot: "https://data.openstates.org/daily/2026-07-01/public.pgdump"
retrieved_at: "2026-07-06"
confidence: "reported"
tags: ["legislation", "bill", "us-ok"]
---

# Oklahoma HB 1588 (2026) — Oklahoma Conservation Commission; creating the Spring Creek Watershed Study Act; effective date.

## Version chain

The bill's text revisions, in order — the diff chain from filing to enrollment.

1. **Introduced** (filed) — [source](https://www.oklegislature.gov/cf_pdf/2025-26 INT/hB/HB1588 INT.PDF)
2. **Engrossed** (committee substitute) — [source](https://www.oklegislature.gov/cf_pdf/2025-26 ENGR/hB/HB1588 ENGR.PDF)
3. **Enrolled (final version)** (committee substitute) — [source](https://www.oklegislature.gov/cf_pdf/2025-26 ENR/hB/HB1588 ENR.PDF)
4. **Floor (House)** (committee substitute) — [source](https://www.oklegislature.gov/cf_pdf/2025-26 FLR/HFLR/HB1588 HFLR.PDF)
5. **Floor (Senate)** (committee substitute) — [source](https://www.oklegislature.gov/cf_pdf/2025-26 FLR/SFLR/HB1588 SFLR.PDF)
6. **HB1588 (4-30-25) (WOODS) RT FA1.PDF** (committee substitute) — [source](https://www.oklegislature.gov/cf_pdf/2025-26 FLOOR AMENDMENTS/Senate/HB1588 (4-30-25) (WOODS) RT FA1.PDF)

## Votes

- Appropriations And Budget Committee: Do Pass — **29–0** (pass) · lower
- Do Pass — **9–1** (pass) · upper
- Advance — **43–1** (pass) · upper
- Third Reading — **46–0** (pass) · upper
- Appropriations — **22–0** (pass) · upper
- Appropriations And Budget Natural Resources Subcommittee: Do Pass — **10–0** (pass) · lower
- Third Reading — **92–1** (pass) · lower

## Sponsors

- Hardin — primary (person)
- Woods — primary (person)

## Timeline

The legislative action history — every referral, reading, and vote.

- **2025-02-03** First Reading `introduction, reading-1`
- **2025-02-03** Authored by Representative Hardin
- **2025-02-04** Second Reading referred to Rules `reading-2, referral-committee`
- **2025-02-10** Withdrawn from Rules Committee
- **2025-02-10** Referred to Appropriations and Budget `referral-committee`
- **2025-02-11** Referred to Appropriations and Budget Natural Resources Subcommittee `referral-committee`
- **2025-02-17** Recommendation to the full committee; Do Pass Appropriations and Budget Natural Resources Subcommittee `committee-passage`
- **2025-02-27** CR; Do Pass Appropriations and Budget Committee `committee-passage`
- **2025-02-27** Authored by Senator Woods (principal Senate author)
- **2025-03-04** General Order
- **2025-03-04** Third Reading, Measure passed: Ayes: 92 Nays: 1 `passage, reading-3`
- **2025-03-04** Referred for engrossment
- **2025-03-05** Engrossed, signed, to Senate `passage`
- **2025-03-05** First Reading `introduction, reading-1`
- **2025-03-05** Coauthored by Representative Deck
- **2025-03-05** Coauthored by Representative Alonso-Sandoval
- **2025-04-01** Second Reading referred to Energy Committee then to Appropriations Committee `reading-2, referral-committee`
- **2025-04-10** Reported Do Pass Energy committee; CR filed `committee-passage`
- **2025-04-10** Referred to Appropriations `referral-committee`
- **2025-04-23** Reported Do Pass as amended Appropriations committee; CR filed `committee-passage`
- **2025-04-23** Title stricken
- **2025-04-28** Placed on General Order
- **2025-05-01** General Order, Amended
- **2025-05-01** Title restored
- **2025-05-01** Amendment restored bill to engrossed version `amendment-passage`
- **2025-05-01** Measure passed: Ayes: 46 Nays: 0 `passage`
- **2025-05-01** Engrossed measure signed, returned to House `passage`
- **2025-05-01** Referred for enrollment
- **2025-05-05** Enrolled, signed, to Senate
- **2025-05-05** Enrolled measure signed, returned to House
- **2025-05-05** Sent to Governor `executive-receipt`
- **2025-05-12** Becomes law without Governor's signature 05/11/2025 `became-law`

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/22ff3fe9-899f-4af9-aa2c-51a08a73a594`. Confidence: reported (aggregated from official Oklahoma legislature records).