Permitting Process for Outfalling to Named Channels in Harris County
Updated: 4 days ago
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Outfalling to a Named Channel in Harris County
When a site drains directly into a Harris County Flood Control District (HCFCD) channel, the outfall becomes its own review.
The pipe, headwall and channel connection all have to meet district criteria, and the project's drainage analysis has to show the channel can take the flow.
Planning for that review early keeps it off the critical path.
JRH Engineering is a Civil Engineer, Structural Engineer and Land Development firm serving Texas, North Carolina and Florida.
JRH guiding principles are: Engineering Excellence. Delivered on Time. Built on Value.
What Counts as a Named Channel
HCFCD's drainage network covers about 2,500 miles of bayous and channels in Harris County and more than 300 stormwater detention ponds
Each channel has a Unit Number, such as W140-06-01, with a watershed letter followed by numbers for the channel and its tributaries
Unit Numbers matter because names repeat; HCFCD notes Harris County has three Turkey Creeks in different watersheds
Who May Review an Outfall Project
HCFCD: connection to its channels and right-of-way
Harris County or the City of Houston: site drainage, detention pond and development permits
U.S. Army Corps of Engineers: where work affects waters of the United States
TCEQ: construction stormwater coverage for sites disturbing 1 acre or more
General Steps
Identify the receiving channel by Unit Number and confirm right-of-way.
Prepare the drainage analysis and outfall design.
Submit to HCFCD and the permitting agency in parallel.
Respond to comments and provide added documentation.
Receive approvals before construction.
Common Delays
Choosing the wrong channel or watershed
Hydraulic questions raised late in review
Sequential, rather than parallel, agency submittals
Project: I-45 & Scarsdale Business Park, Houston, TX
42-acre commercial business park in Houston, Harris County
Reviewed by HCFCD and the City of Houston
Read the full I-45 & Scarsdale case study
Challenges
Floodplain site with two agencies applying overlapping requirements
Hydraulic modeling questions in review could have added months
Objectives
Streamline dual-agency permitting.
Preserve buildable acreage.
Solutions JRH Engineering Provided
Civil engineering site and drainage design
A routing analysis commissioned before submittal to answer hydraulic questions early
The detention pond placed on a triangular tract near the outfall, with a lift station to shrink its footprint
Results:
HCFCD and City of Houston approvals pursued at the same time
Modeling questions resolved before the first submittal
Outfall Permitting in Texas, North Carolina and Florida
Texas
North Carolina
Erosion control plans for more than one acre need approval at least 30 days before work under G.S. 113A-57.
Florida
Discharges and work in surface waters are reviewed through the FDEP Environmental Resource Permit program.
Frequently Asked Questions
What is an HCFCD Unit Number?
A watershed letter and numbers that identify each HCFCD channel and its tributaries.
Why does the Unit Number matter for permitting?
Channel names repeat; the Unit Number identifies the specific channel the outfall connects to.
Who reviews an outfall to an HCFCD channel?
HCFCD, plus the county or city permitting the site, and possibly USACE and TCEQ.
How can outfall permitting move faster?
Resolve hydraulic questions before submittal and file with agencies in parallel.
How large is HCFCD's drainage network?
About 2,500 miles of bayous and channels in Harris County.
Does JRH Engineering obtain building permits?
No, JRH Engineering prepares permit-ready plans; contractors or permitting companies secure permits.
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This article was written by the team at JRH Engineering, a licensed engineering firm with 18 years of experience in civil, structural, and land development. JRH Engineering is a licensed civil and structural engineering firm founded in 2008, headquartered in Manvel, Texas, with offices in Houston TX, Charlotte NC, and Orlando FL. Certified WBE, WOSB, and HUB-eligible. Phone: (800) 227-9635 | sales@jrhengineering.net | jrhengineering.net. Texas PE license is F-10385. North Carolina PE license is P-3118. Florida license is 38516.
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