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09/30/2014 Meeting Agenda

Update on Agency Meetings and Hydrology Requests

Discussion of Hydrology Maps and Table Comments

Presentation of ICF’s LiDAR analysis for stream slopes and reach assessment

Presentation of ICF’s exceedance analysis of Wildermuth’shydrology data

Next Steps

Hydrology Technical Advisory Committee

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• Data on existing, improved, and new recharge basin capacity, as well as measured baseline and estimated new storm water diversion/recharge (last 10 years)

• Data on daily discharge (last 10 years) from existing and proposed water treatment plants

• Data on forecasted changes to received wastewater projections

Update on Agency Meetings and Hydrology Requests

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Hydrology Maps and Table Comments

Commenter Comment ResponseValley District The West Fork of City Creek is one of

the spots the USFS and USFWS is currently considering for translocation of mountain yellow legged frog. I'm not sure what other creeks are being considered. I've invited the San Bern. Forest Bio, Dave Austin to attend one of our future meetings.

Valley District I believe Rialto Channel was occupied by vireo as of 2 years ago. SB County Biologists would know for sure.

ICF: Yes, safe to assume occupied

Valley District Cactus Basin #3 or 3A was occupied by vireo although they were thought to be just passing through. Again, check with SB County Bios.

ICF: Yes, safe to assume occupied

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Hydrology Maps and Table Comments

Commenter Comment ResponseValley District Cucamonga/Mill Creek is occupied by

vireo.ICF: Yes, safe to assume occupied.

Valley District There are Santa Ana woolley-star near the proposed Riverside Rubber Dam project area that would be affected by hydro changes in that stretch of stream.

ICF: With current levees along this stretch of the SAR, for our preliminary assessment we have assumed that terraces above the levees would no longer be subject to active scour. If this is incorrect, may need to reassess.

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Hydrology Maps and Table Comments

Commenter Comment ResponseValley District There are Santa Ana woolley-star

near the proposed Riverside Rubber Dam project area that would be affected by hydro changes in that stretch of stream.

Kai Palenscar: The rubber dam would affect woolly-star both upstream and potentially downstream of the proposed construction location (in stream), as well as potentially in the areas proposed for the constructed basins (out-of-stream, just north of the river). There is a large population of woolly-star found just east of the footprint of the proposed basins.

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Hydrology Maps and Table Comments

Commenter Comment ResponseValley District The statement "potential reduction

in peak flow events" could be misleading as most of the recharge activities proposed would not be capturing water during the peak of an event (except Seven Oaks Dam) rather they would be capturing the tail of an event after the flow was down to a level that the diversion structure (such as rubber dam) could safely capture water without damaging the infrastructure. I'd like to be more clear on what water we actually mean to capture.

ICF: We need to gather as many specifics as possible on recharge operations to understand the basins alter the magnitude and duration of flow events.

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Hydrology Maps and Table Comments

Commenter Comment ResponseValley District Why isn't San Bernardino

Kangaroo Rat identified on the maps? Hydrology will be very important to the SBKR analysis.

ICF: SBKR suitability mappinghas been performed and it can be added to the maps.

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Hydrology Maps and Table Comments

Commenter Comment ResponseValley District Should we add a column where partners

could identify activities that may affect hydrology within our plan area that either have been, or may be, proposed by other agencies not in the HCP? For instance - If the City of Colton decides to recycle their water rather than send it to RIX (which RIX includes in their permanent discharge forecast) then how much would that potentially reduce the available water for SAS habitat? Or the 8-mile revetment being proposed along Lytle Creek (just a guess this may affect your analysis a bit). Maybe we could just talk in the group Tuesday to see if anyone has heard other projects that we should be keeping in the back of our minds.

ICF: HTAC discussion item.

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Hydrology Maps and Table Comments

Commenter Comment ResponseEric Stein -S. CA. Coastal Water Research Project

How will changes in stormwater discharge (either wet or dry weather) be handled in the analysis. As water reuse, combined with drought effects change base flow or non-point source discharge patterns – there may be changes to instream habitat. Regardless of whether this is a “covered activity”, it seems that it should be acknowledged somehow

ICF: HTAC discussion item.

Discuss Wildermuth modeling scenarios.

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Hydrology Maps and Table Comments

Commenter Comment Response

Eric Stein - S.CA. Coastal Water Research Project

It appears that your table only includes changes to average daily flow and to peak flow. This seems overly simplistic. Under the ELOHA framework, there are a series of potential flow effects including, base flow indices, timing and duration of flow, flashiness, peak flow modification, recurrence interval shifts. Each of these has the potential to affect habitat. It seems that we should think more about specific types of hydrologic modification and generate hypotheses about specific potential effects on biology and way you might test or monitor for those effects. That would form a more robust analytical framework.

ICF: The table refers to thetype of flow data (daily or peak). Magnitude, duration, frequency analysis is being performed on all flow data.

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Hydrology Maps and Table Comments

Commenter Comment ResponseKai Palenscar- USFWS

I would like to see channelized hard bottom identified on the figures as well as the associated cumulative length of hard bottom identified per reach included as a column in the table.

ICF: Information will be added.

Kai Palenscar- USFWS

Add to Figure 1 the channel that connects City Creek to Twin Creek. It is included on our sucker recovery plan

ICF: Added. Confirm channelnames.

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Hydrology Maps and Table Comments

Commenter Comment ResponseKai Palenscar- USFWS

Hardcopy Map Edits: 1) Labels for creek names; 2) Dace likely extirpated from Twin Ck & Strawberry Ck; 3) Add upper San Timoteo Wash to Study Area

ICF: Changes will be made.

Kerwin Russell -RCRCD

I think that on the map the outflow for the City of Riverside is noted as the Riverside Regional Water Quality Control Plant. Should it say the City of Riverside Water Quality Control Plant? If it is the one off Van Buren. Unless they call it that.

ICF: Confirm with HTAC

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Hydrology Maps and Table Comments

Commenter Comment ResponseRPU There is a wastewater discharge location at the

upper end of Plunge Creek drainage, along FredalbaCreek. The basins are visible on Google Earth. We do not have a copy of the discharge permit however recall that the discharge was rather small and did not venture past the basins. We also believe that the discharge belongs to Running Springs Water District.

ICF: Location will be noted

RPU Consider labeling the USGS Gages as active or inactive.

ICF: Will make changes on maps

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Hydrology Maps and Table Comments

Commenter Comment ResponseRPU Two USGS gage locations along the SAR mainstem

at the 10 and 60 freeways seem to be located inaccurately, they are shown as occurring outside of the river

ICF: Locations will be adjusted.

RPU RPU has a few projects that will occur along/adjacent to SAR tributaries and are the Hidden Valley Wetlands Project and Riverside Basin Proposed Recharge Projects. Should these project IDs be included on the maps as is our Rubber Dam Project and other projects related to surface flows?

ICF: HTAC/HCP discussion item.

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Hydrology Maps and Table Comments

Commenter Comment ResponseRPU The San Bernardino WWTP should be changed to

the City of San Bernardino Water Reclamation Facility. This is the naming scheme in the permit.

ICF: Name will be changed.

RPU The Riverside Regional Water Quality Control Plant should be changed to City of Riverside Regional Water Quality Control Plant (RWQCP). This is the naming scheme in the permit.

ICF: Name will be changed.

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Hydrology Maps and Table Comments

Commenter Comment ResponseRPU Can the legend provide a description of what the

numbers/project IDs on the map represent? Could the table also include the numbers/project IDs corresponding with the projects?

ICF: Covered Activity ID’s were recently edited to assign unique agency code to each. If feasible, a legend will be added to the maps. Names of IDs currently listed in the table.

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LiDAR Analysis for Stream Slopes and Reach Assessment

Topography Sources: 1) SB County LiDAR; 2) Corps LiDAR; 3) USGS 1/3 Arc-Second DEM

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LiDAR Analysis for Stream Slopes and Reach Assessment Excel Example

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Wildermuth Modeled Flow Analysis

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Wildermuth Modeled Flow Analysis

Wildermuth’s (WEI) Wasteload Allocation Model: The nodes outside of the main stem Santa Ana River are only collecting storm water information. The stream hydraulics and actual diversion projects on the tributaries are not simulated. Rather, these estimates (recharge and discharge) are included in the nodes on the main stem. For our purposes with SAWPA, our interest has only been the Santa Ana River. We are slowly updating our model to reflect the real conditions on the tributaries.

Wildermuth’s (WEI) Dry-Weather Discharge and Depth Analysis of the Santa Ana River HEC-RAS and historic hydrologic analysis of dry-weather discharge conditions in

the Santa Ana River draft reports (not yet available)

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Wildermuth Modeled Flow Analysis NodesName NodeGreenspot Rd 2Mill Creek 3Orange St 4Alabama St 5SAR & City Creek 6Mountain View Ave 7Waterman Ave 8San Timoteo Creek 9Twin Creek 11Mt. Vernon Ave 13La Cadena Dr 16Rialto WWTP 19RIX 20Riverside Ave 21Market St 23Mission Blvd 24MWD Crossing 25Van Buren Blvd 26Hole Lake 27Hidden Valley WA 30San Sevaine Creek 32Day Creek 33I-15 34Hammner Rd 35River Rd 36Temescal Creek 37Prado Basin 38SAR at Below Prado 41Tenessee St 42So. Cal. Regional RR 71I-215 111Union Pacific RR 151I-60 231Union Pacific RR RN 244

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Wildermuth: Publically Owned Treatment Works (POTW) Scenarios

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Wildermuth: Publically Owned Treatment Works (POTW) Scenarios

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Wildermuth Modeled Flow AnalysisExcel Example

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Wildermuth Modeled Flow Analysis

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Determine specific flow alteration for Plan Area reaches

Increasing degrees of flow alteration from baseline condition are associated with increasing ecological change

Develop flow metrics to describe how covered activities alter the magnitude, frequency, duration, timing, and rate of change of flow events

Calculate for each node the degree of hydrologic alteration

Daily exceedance values and life stage importance (e.g., 25, 50, 75%)

Channel maintenance flows: peak flows important for flushing of fine sediment, bed and bank scour, floodplain inundation, riparian recruitment

Implications of flow alteration on water quality, temperature, TDS

Next Steps: Flow Alteration for Each Analysis Node

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Develop flow-alteration response relationships that form a basis for developing environmental flow standards

Develop flow-ecology hypothesis for each reach

(e.g. X% flow reduction = Y% habitat change)

Level of analysis will be determined on an individual basis

Amount of existing information available

Consider the value of informational components of various ecological models (e.g., IFIM and EDT) to assist in the analysis

Adapt components to specifics of life stage requirements of HCP species

Not proposing to implement a full IFIM or EDT study

Quantify % ecological change to extent possible or use categorical responses (e.g., low, medium, high) or trajectory of change (+ / -)

Next Step: Flow-Ecological Relationships

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Stream Gage AnalysisUSGS 11062000 Lytle Creek near Fontana (Reach 5) Flow Duration Curve