# Presentation: 157720

## Annual Interagency Water Resources MeetingLittle Rock District

- March 28, 2007

## Overview H&H Types of Work

- Planning Studies
- GI
- CG
- CAP
- Dam Safety
- Plans and Specifications
- Military
- Operations
- Other

## Overview H&H FY07 ~Funding

- Planning Studies			$300k
- GI
- CG
- CAP
- Dam Safety				$147k
- Plans and Specifications		$   4k
- Operations & Maintenance		$525k
- Other 					$   0k
- FY07 Total Budget			$976K

**Notes:**
PLANNING
GI:  Springfield, MO  $20K     Pine Mtn Dam   $30K
CG:  Ark-White $50K	MPLD  $75K
CAP:  Grassy  $25K	Hbr Springs  $40K	   Prairie Cr  $40K   HS Branch, MO  $20K

DAM SAFETY
Clearwater Dam, MO Major Rehab  $125K
Gillham Dam  $10K
Periodic Inspections $12K

PLANS & SPECS
US HWY 71  	$1000
AR HWY 134  	$1000
Batesville, AR WWTP	$2000

O&M
Carryover funds for ARNS  3 Pool 2D models @ 150K each
Spillway adequacy studies 4 @ $75K each

## Overview H&H FY07 Projects

- Planning Studies
- GI
- Springfield, MO FDR & Environmental Restoration
- Pine Mountain Lake, AR FDR
- White River, AR Minimum Flows
- CG
- Arkansas-White Rivers Cutoff
- MPLD Water Control Manual
- CAP
- Grassy Lake, AR Sect 1135
- Heber Springs, AR; Neosho, MO  Sect 205s

**Notes:**
General Investigations.
Springfield, MO is a Congressional sponsored flood damage reduction study for the downtown area of Springfield, MO.  City of Springfield is performing the H&H; SWL is advising and reviewing.
Pine Mtn Lake is a proposed flood control & water supply lake in west central Arkansas. Studied in the 1960s.
Construction General.
Ark-White cutoff is investigating ways to limit the cross-river flow exchange between lower Arkansas River & White River that threatens the viability of the MKARNs.  MKARNs uses the last 10 miles of the White River for entrance into the navigations system. Solutions include levee to limit flow; gated structure to regulate flow; non-gated structure to control flow
H&H needs to develop the water control manual for MPLD that came on line in June 2004.
Continuing Authorities Program.
Grassy Lake is a study to improve the water quality and environmental sustainability of a lake cut off by the impoundment of MW.  Funding to collect field data at this time.
Several small flood damage reduction project for Sulpher Creek and High School Branch is the respective towns.  May initiate work late this FY if funding is provided as planned.

## Overview H&H FY07 Projects

- Dam Safety
- Clearwater Lake, MO Major Rehabilitation
- Gillham Dam, AR Stilling Basin
- Periodic Inspections (6X)
- Plans and Specifications
- US Hwy 71 Sect 14
- AR Hwy 164 Sect 14
- Batesville, AR WWTP Sect 14
- Russellville Slack Water Harbor, Sect 107

**Notes:**
Dam Safety
Sizing the spillway to compute the inflow design flood and preparing a report to document “interim risk reduction measures”
Others are routine inspections to identify any significant dam safety issues
Plans & Specifications
Sect 14 Projects are designed and awaiting signed cooperation agreements; will be constructed in 2007
RVSH may receive funding this year, but will not start construction.  EIS is ongoing and is being done by FHA.

## Overview H&H FY07 Projects

- Operations & Maintenance
- MKARNs 12’ Channel Design
- Spillway Adequacy Studies

**Notes:**
O&M 
Have completed analysis for 2 pools in MKARNs to add or modify structures to support a 12 ft navigation channel.  Designing the structures for 2 pools currently and will begin a 3d pool later this year.  Using the 2 dimensional hydrodynamic model CCHE2D developed by UMiss.
Computing new inflow design floods for 4 projects and investigating the adequacy of the existing spillways.  The IDF criteria changed in the 1990s and previous studies were done in the 1970s.

## Overview H&H FY07 Unfunded Projects

- Planning Studies
- GI
- CG
- CAP
- 8 Unfunded FDR Sect 205 Projects
- 3 Unfunded Aquatic Ecosystem Restoration Sect 206 Projects
- 1 Unfunded Emergency Streambank Protection Sect 14 Project
- 4 Unfunded Project Mods for Improvement of the Environment Sect 1135 Projects

**Notes:**
Limited funding for Pine Mtn Lake study.

## Overview Collaborative Efforts: USGS

- Hardy, AR
- Installing flood warning system
- Clinton, AR
- Investigating the feasibility of installing flood warning system
- Data Collection Platforms
- Donated excess DCPs to USGS for backups/parts

## Overview  Collaborative Efforts: NWS

- Coordination with Project Offices & NWS Hydrologist during January 2007 Event
- Pre-event Contingency Forecast for White River
- Rainfall forecasts
- Experienced rainfall summary
- Coordination with Tulsa RFC to update Arkansas River forecast model
- Backwater models, geometry
- Water Control Manuals
- Monthly reservoir reports

**Notes:**
The ABRFC is preparing to issue AHPS long term probabilistic river forecasts for points in the Arkansas River basin from R.S. Kerr Reservoir to Pine Bluff, Arkansas.  We will be modifying and recalibrating our hydrologic models for this area.  Eventually we also plan to develop a hydraulic model for the navigation system and other tributary sites affected by the Arkansas River.  The model will be developed using the HEC-RAS unsteady flow model and converted to FLDWAV for our operational forecasts.

## Overview  Collaborative Efforts: BuRec

- Requested information regarding design of a stilling basin energy dissipater
- Mason Dam in Utah
- May be adaptable to Gillham Dam

## Overview H&H Study Efforts

- Comments?
- Questions?