---
type: "Bill"
title: "Reservoir Releases For Fish And Wildlife Mitigation"
description: "Current law requires an applicant for a water diversion, delivery, or storage facility that requires an application for a permit, license, or other approval from the United States to submit for approval a proposal to the Colorado water conservation board (board), parks and wildlife commission, and the division of parks and wildlife for a fish and wildlife mitigation plan (mitigation plan), which mitigation plan, when approved, is communicated to each federal, state, or other governmental agency from the which the applicant must obtain a permit, license, or other approval."
jurisdiction: "us/states/co"
legislature: "Colorado General Assembly"
session: "2018A"
identifier: "SB 18-170"
citation: "Colorado SB 18-170 (2018A)"
classification: ["bill"]
subjects: []
status: "enacted"
primary_sponsors: ["Chris Hansen", "Hugh McKean", "Jerry Sonnenberg"]
version_count: 8
action_count: 17
vote_count: 2
first_action: "2018-02-21T07:00:00+00:00"
last_action: "2018-04-12T06:00:00+00:00"
source: "openstates"
source_identifier: "ocd-bill/ca31f5aa-cb71-424a-a6eb-ed232ffeae95"
source_url: "http://leg.colorado.gov/bills/sb18-170"
source_hash: "386255913a48c9ca53497dcf6139f7ef49506f3791a9403b4e8c70888562c69a"
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 SB 18-170 (2018A) — Reservoir Releases For Fish And Wildlife Mitigation

Current law requires an applicant for a water diversion, delivery, or storage facility that requires an application for a permit, license, or other approval from the United States to submit for approval a proposal to the Colorado water conservation board (board), parks and wildlife commission, and the division of parks and wildlife for a fish and wildlife mitigation plan (mitigation plan), which mitigation plan, when approved, is communicated to each federal, state, or other governmental agency from the which the applicant must obtain a permit, license, or other approval.

## 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/documents/2018a/bills/cr/2018a_sb170_h_agr_001.pdf)
2. **Engrossed (03/05/2018)** (committee substitute) — [source](http://leg.colorado.gov/sites/default/files/documents/2018A/bills/2018a_170_eng.pdf)
3. **Final Act (04/06/2018)** (committee substitute) — [source](http://leg.colorado.gov/sites/default/files/documents/2018A/bills/2018a_170_enr.pdf)
4. **Introduced (02/21/2018)** (committee substitute) — [source](http://leg.colorado.gov/sites/default/files/documents/2018A/bills/2018a_170_01.pdf)
5. **PA1 (03/01/2018)** (committee substitute) — [source](http://leg.colorado.gov/sites/default/files/documents/2018A/bills/2018a_170sagr_01.pdf)
6. **Reengrossed (03/08/2018)** (committee substitute) — [source](http://leg.colorado.gov/sites/default/files/documents/2018A/bills/2018a_170_ren.pdf)
7. **Rerevised (03/29/2018)** (committee substitute) — [source](http://leg.colorado.gov/sites/default/files/documents/2018A/bills/2018a_170_rer.pdf)
8. **Revised (03/26/2018)** (committee substitute) — [source](http://leg.colorado.gov/sites/default/files/documents/2018A/bills/2018a_170_rev.pdf)

## Votes

- BILL — **31–4** (pass) · lower
- BILL — **59–4** (pass) · lower

## Sponsors

- Chris Hansen — primary (person)
- Hugh McKean — primary (person)
- Jerry Sonnenberg — primary (person)

## Timeline

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

- **2018-04-12T06:00:00+00:00** Governor Signed `executive-signature`
- **2018-04-09T06:00:00+00:00** Sent to the Governor `executive-receipt`
- **2018-04-06T06:00:00+00:00** Signed by the Speaker of the House
- **2018-04-04T06:00:00+00:00** Signed by the President of the Senate
- **2018-03-29T06:00:00+00:00** House Third Reading Passed - No Amendments `reading-3, passage`
- **2018-03-28T06:00:00+00:00** House Third Reading Laid Over to 03/29/2018 - No Amendments
- **2018-03-27T06:00:00+00:00** House Third Reading Laid Over to 03/28/2018 - No Amendments
- **2018-03-26T06:00:00+00:00** House Second Reading Passed - No Amendments `reading-2`
- **2018-03-23T06:00:00+00:00** House Second Reading Laid Over to 03/26/2018 - No Amendments
- **2018-03-22T06:00:00+00:00** House Second Reading Laid Over to 03/23/2018 - No Amendments
- **2018-03-19T06:00:00+00:00** House Committee on Agriculture, Livestock, & Natural Resources Refer Unamended to House Committee of the Whole `referral-committee, committee-passage`
- **2018-03-13T06:00:00+00:00** Introduced In House - Assigned to Agriculture, Livestock, & Natural Resources `introduction`
- **2018-03-08T07:00:00+00:00** Senate Third Reading Passed - No Amendments `reading-3, passage`
- **2018-03-06T07:00:00+00:00** Senate Third Reading Laid Over to 03/08/2018 - No Amendments
- **2018-03-05T07:00:00+00:00** Senate Second Reading Passed with Amendments - Committee `reading-2`
- **2018-02-28T07:00:00+00:00** Senate Committee on Agriculture, Natural Resources, & Energy Refer Amended to Senate Committee of the Whole `referral-committee, committee-passage`
- **2018-02-21T07:00:00+00:00** Introduced In Senate - Assigned to Agriculture, Natural Resources, & Energy `introduction`

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/ca31f5aa-cb71-424a-a6eb-ed232ffeae95`. Confidence: reported (aggregated from official Colorado legislature records).