---
type: "Bill"
title: "Augmentation Of Instream Flows"
description: "The act authorizes the Colorado water conservation board to augment stream flows to preserve or improve the natural environment to a reasonable degree by use of an acquired water right that has been previously quantified and changed to include any augmentation use, without a further change of the water right being required."
jurisdiction: "us/states/co"
legislature: "Colorado General Assembly"
session: "2020A"
identifier: "HB 20-1037"
citation: "Colorado HB 20-1037 (2020A)"
classification: ["bill"]
subjects: []
status: "enacted"
primary_sponsors: ["Don Coram", "Jeni James Arndt"]
version_count: 10
action_count: 14
vote_count: 4
first_action: "2020-01-08T07:00:00+00:00"
last_action: "2020-03-24T06:00:00+00:00"
source: "openstates"
source_identifier: "ocd-bill/c7acaa2b-05e6-4641-a44e-4da92f72cde2"
source_url: "http://leg.colorado.gov/bills/hb20-1037"
source_hash: "0bd9dd2e204544ba4b81100f7ceff9b92163cbacb12188732510b698e50c395a"
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-co"]
---

# Colorado HB 20-1037 (2020A) — Augmentation Of Instream Flows

The act authorizes the Colorado water conservation board to augment stream flows to preserve or improve the natural environment to a reasonable degree by use of an acquired water right that has been previously quantified and changed to include any augmentation use, without a further change of the water right being required.

## Version chain

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

1. **Committee Amendment** (committee substitute) — [source](http://leg.colorado.gov/sites/default/files/2020a_hb1037_s_agr_001.pdf)
2. **Engrossed (01/28/2020)** (committee substitute) — [source](http://leg.colorado.gov/sites/default/files/documents/2020A/bills/2020a_1037_eng.pdf)
3. **Final Act (03/17/2020)** (committee substitute) — [source](http://leg.colorado.gov/sites/default/files/documents/2020A/bills/2020a_1037_enr.pdf)
4. **Introduced (01/08/2020)** (committee substitute) — [source](http://leg.colorado.gov/sites/default/files/documents/2020A/bills/2020a_1037_01.pdf)
5. **PA1 (01/24/2020)** (committee substitute) — [source](http://leg.colorado.gov/sites/default/files/documents/2020A/bills/2020a_1037rur_01.pdf)
6. **PA2 (02/21/2020)** (committee substitute) — [source](http://leg.colorado.gov/sites/default/files/documents/2020A/bills/2020a_1037sagr_01.pdf)
7. **Reengrossed (01/29/2020)** (committee substitute) — [source](http://leg.colorado.gov/sites/default/files/documents/2020A/bills/2020a_1037_ren.pdf)
8. **Rerevised (02/26/2020)** (committee substitute) — [source](http://leg.colorado.gov/sites/default/files/documents/2020A/bills/2020a_1037_rer.pdf)
9. **Revised (02/25/2020)** (committee substitute) — [source](http://leg.colorado.gov/sites/default/files/documents/2020A/bills/2020a_1037_rev.pdf)
10. **Signed Act (03/24/2020)** (committee substitute) — [source](http://leg.colorado.gov/sites/default/files/2020a_1037_signed.pdf)

## Votes

- BILL — **31–1** (pass) · upper
- BILL — **63–0** (pass) · lower
- CONCUR — **62–1** (pass) · lower
- REPASS — **63–0** (pass) · lower

## Sponsors

- Don Coram — primary (person)
- Jeni James Arndt — primary (person)

## Timeline

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

- **2020-03-24T06:00:00+00:00** Governor Signed `executive-signature`
- **2020-03-23T06:00:00+00:00** Sent to the Governor `executive-receipt`
- **2020-03-17T06:00:00+00:00** Signed by the Speaker of the House
- **2020-03-17T06:00:00+00:00** Signed by the President of the Senate
- **2020-02-28T07:00:00+00:00** House Considered Senate Amendments - Result was to Concur - Repass
- **2020-02-27T07:00:00+00:00** House Considered Senate Amendments - Result was to Laid Over Daily
- **2020-02-26T07:00:00+00:00** Senate Third Reading Passed - No Amendments `reading-3, passage`
- **2020-02-25T07:00:00+00:00** Senate Second Reading Passed with Amendments - Committee `reading-2`
- **2020-02-20T07:00:00+00:00** Senate Committee on Agriculture & Natural Resources Refer Amended - Consent Calendar to Senate Committee of the Whole `committee-passage`
- **2020-02-03T07:00:00+00:00** Introduced In Senate - Assigned to Agriculture & Natural Resources `introduction`
- **2020-01-29T07:00:00+00:00** House Third Reading Passed - No Amendments `reading-3, passage`
- **2020-01-28T07:00:00+00:00** House Second Reading Passed with Amendments - Committee, Floor `reading-2`
- **2020-01-23T07:00:00+00:00** House Committee on Rural Affairs & Agriculture Refer Amended to House Committee of the Whole `committee-passage, referral-committee`
- **2020-01-08T07:00:00+00:00** Introduced In House - Assigned to Rural Affairs & Agriculture `introduction`

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/c7acaa2b-05e6-4641-a44e-4da92f72cde2`. Confidence: reported (aggregated from official Colorado legislature records).